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User:Wangsunan

2019-08-23T11:19:18Z

Wangsunan: test summary

I love Factorio!!

Inserters

2019-08-23T06:11:41Z

Wangsunan: /* Inserter speed */

{{Languages}}
''For the common yellow electrical inserter, see [[Inserter]].''

'''Inserters''' are devices which are used to move items over short distances. When placed, they have a fixed direction. They can move items from behind and place them in front of them. By doing this, they can move items from one transport belt to another, but also extract items from—and insert items into—machines or storage devices.

== Types of inserters ==

{| class="wikitable"
| {{Imagelink|Burner inserter}} || The only [[fuel]]-powered inserter, with the slowest speed.
|-
| {{Imagelink|Inserter}} || The standard electrical inserter.
|-
| {{Imagelink|Long handed inserter}} || Capable of inserting and removing items from a greater distance.
|-
| {{Imagelink|Fast inserter}} || Much faster than the inserter.
|-
| {{Imagelink|Filter inserter}} || Variant of the fast inserter that can filter items by type.
|-
| {{Imagelink|Stack inserter}} || As fast as the fast inserter, but can move many more items at the same time at once.
|-
| {{imagelink|Stack filter inserter}} || Variant of the stack inserter that can filter items by type.
|-
|}

==Mechanics==
Inserters '''will''':
* Pick up items off the ground, off of a [[Transport belts|transport belt]], or from any object that has storage space, including [[Chests|chests]], [[furnace]]s and [[assembling machine]]s.
* Place the item onto the ground, onto a transport belt, or into any object that has storage space.
* Run at slower speeds when starved for energy.
* Pick up as many items as their [[inserter capacity bonus (research)|stack size]] allows at once, if they do not have to wait too long to pick them up.

Inserters '''will not''':
* Pick up any items that can not be inserted into the adjacent entity.
* Pick up any items if the adjacent entity is a blueprint.
* Pick up items to place into an entity with a full inventory.
* Place more than one item at a time onto the same ground tile.
* Place items into an entity that can not hold them, for example due to [[Stack#Filtered_stacks|filtered]] or [[Stack#Stack_limitation|limited slots]].
* Fill up the entire target inventory of [[boiler]]s, [[nuclear reactor]]s, [[:Category:Producers|production building]]s, [[furnace]]s, and [[turret]]s.

If two or more inserters are picking up from the same tile, the inserter who can grab the items the fastest will grab them first. Besides faster inserters, this favors inserters taking from the inner lane of a transport belt.

=== Insertion limits ===
Depending on where an inserter is moving items, it does not always fill up the entire target inventory. This allows other inserters taking from the same transport belt to pick up their share of the items. For example, if a boiler has 5 or more items of fuel in it, an inserter will not insert additional fuel. This allows the other fuel to travel further down the transport belt. When the fuel drops below 5 items, the inserter will resume inserting fuel, up to the limit of 5 items.

{| class="wikitable"
! Entity !! Item type !! Automatic insertion limit
|-
| [[Boiler]]s, [[burner inserter]]s, [[furnace]]s, and [[nuclear reactor]]s || [[Fuel]] || align="center" | 5
|-
| [[Gun turret]]s || Bullet Magazines || align="center" | 10
|-
| [[Artillery turret]]s || [[Artillery shell]]s || align="center" | 5
|-
| [[Assembling machine]]s, [[furnace]]s, [[centrifuge]]s, [[chemical plant]]s, and [[Oil refinery|oil refineries]]|| Items needed for the recipe || The ingredients for 1 craft in addition to the ingredients for the number of crafts that can complete during one full inserter swing; but at least the ingredients for 2 crafts and at most the ingredients for 100 crafts.
|-
| [[Lab]]s || [[Science pack]]s || Double the number of science packs needed for one research unit.
|}

An inserter that has a higher [[inserter capacity bonus (research)|inserter capacity bonus]] than 1 can overfill the target building, due to the inserter picking up a higher amount of items than needed. Overfilling can also occur if multiple inserters are used to insert items into one building.

=== Inserters and transport belts ===
[[Transport belts]] have two lanes on which items can travel. Inserters only place items onto one side of the belt, either the far side from the inserter's perspective or if the belt is going the same or the opposite direction as the inserter the right side from the belt's perspective.

{|
| style="width:320px;" | [[File:Inserter_dropoff_locations.gif]] || [[File:Inserter_pickup_locations.gif]]
|-
| style="width:320px;" | Inserters place the item on the furthest lane. If a belt is in the same orientation as the inserter, the item will be placed on the right-hand lane, from the belt's perspective. In curves the inserter always places on the far side.
| style="width:320px;" | Inserters '''prefer''' taking items from the nearest lane. If the nearest lane is empty, the inserter will take from the far lane. If a belt is in the same orientation as the inserter, the inserter '''prefers''' taking from the left lane, from the belt's perspective. If the left lane is empty it will take from the right lane.
|}

=== Potential issues ===
Inserters may have problems picking up items:

* From very fast belts, because the items are moving too quickly.
* From the entry or exit of an underground belt (because the time they have to pick up is shorter)
* From turning belts if the item is on the inside of the corner

== Power usage ==
* Electric inserters drain energy even when they are not moving, as idle power
* The amount of energy used is the same for every turn
* The [[burner inserter]] does not drain energy when idle, but uses more energy when it is active.

== Inserter speed ==
[[File:all_inserter_speeds.gif|frame|right|Animation showing all inserter speeds at once.]]
{| class="wikitable"
! Type
! Rotation-speed (turns per [[Game-tick]]) Extension-speed ([[Tile (unit)|Tile]]s per Tick)
! Turns per [[Game-second]]
! Game-second per full turn
! Ticks per full turn
|- align="center"
| align="left"| {{Imagelink|Burner inserter|Burner inserter}} || 0.01 0.0214 || 0.60 || 1.667 || 100
|- align="center"
| align="left"| {{Imagelink|Inserter|Inserter}} || 0.014 0.03 || 0.83 || 1.2 || 72
|- align="center"
| align="left"| {{Imagelink|Long handed inserter|Long handed inserter}} || 0.02 0.0457 || 1.2 || 0.833 || 50
|- align="center"
| align="left"| {{Imagelink|Fast inserter}} {{Imagelink|Filter inserter}} {{Imagelink|Stack inserter}} {{imagelink|Stack filter inserter}} || 0.04 0.07 || 2.31 || 0.433 || 26
|-
|}

'''Note:''' These numbers come directly from the [https://github.com/wube/factorio-data/tree/master/base/prototypes/entity factorio-data github repository].

===Rotation Speed===
Convention: 2π rad = 100% of a circle rotation = '''1 turn''' (or one full rotation).

Note: an Inserter doesn't always need to make full turns. When grabbing from a transport belt, it is slightly faster when grabbing items from the closest lane.

===Extension Speed===
The extension-speed is normally not visible (only when compared to other inserters), but there are measurable speed differences when taking - for example - from the near or the far side of a belt. Also Some mods can alter the pickup and drop locations of inserters, making this stat more relevant.

==Inserter Throughput==

The following is based on experimental data from [https://docs.google.com/spreadsheets/d/1Q4hxL69qrK3qeEKU8aDkuwM3gJy6I2dJ4FYSs-FQUpI/edit?usp=sharing 0.17].
Most of the 0.17 experimental data was gathered using the following circuit blueprint to measure the exact tick difference between inserter swings. A lot of the data on this page (specifically the belt to chest data) relies heavily on the conditions of the setup on which the measurements are done. If your setup differs from the ones tested on this page, you can use the following blueprint to do the measurements yourself.

{{BlueprintString|bp-string=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}}

===Chest to chest===

'''Note:''' Experimental data from 0.17

{| class="wikitable"
! rowspan=2 | Type
! rowspan=2 | Arm cycles per second
! colspan=6 | Items/second at [[inserter capacity bonus (research)|capacity bonus]] level (stack size)
|-
! colspan=2 | No capacity bonus
! colspan=2 | Capacity bonus 2
! colspan=2 | Capacity bonus 7
|- align="center"
| align="left"| {{Imagelink|Burner inserter|Burner inserter}} || 0.60 || 0.60 || (1) || 1.20 || (2) || 1.80 || (3)
|- align="center"
| align="left"| {{Imagelink|Inserter|Inserter}} || 0.83 || 0.83 || (1) || 1.67 || (2) || 2.50 || (3)
|- align="center"
| align="left"| {{Imagelink|Long handed inserter|Long handed inserter}} || 1.20 || 1.20 || (1) || 2.40 || (2) || 3.60 || (3)
|- align="center"
| align="left"| {{Imagelink|Fast inserter|Fast inserter}} {{Imagelink|Filter inserter|Filter inserter}} || 2.31 || 2.31 || (1) || 4.62 || (2) || 6.92 || (3)
|- align="center"
| align="left"| {{Imagelink|Stack inserter|Stack inserter}} {{imagelink|stack_filter_inserter|Stack filter inserter}} || 2.31 || 4.62 || (2) || 9.23 || (4) || 27.69 || (12)
|-
|}

===Chest to belt===

Throughput going from chest to belt depends on how full the belt is. An inserter will not put down an item on a belt that have items back-to-back (aka full compression) - it waits until there is a gap. However, if the gap is narrower than the item then the items upstream on the belt will stop to make room for the item being inserted. The direction of the belt compared to the inserter does not matter however.

In these measurements inserters move items onto an empty belt. Values are given for the stack sizes at three different [[inserter capacity bonus (research)|capacity bonus]] levels.

'''Note:''' Experimental data from 0.17

{| class="wikitable"
! rowspan=3 | Type
! colspan=12 | Items/second at [[inserter capacity bonus (research)|capacity bonus]] level (stack size)
|-
! colspan=4 | No capacity bonus
! colspan=4 | Capacity bonus 2
! colspan=4 | Capacity bonus 7
|-
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]] ||
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]] ||
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]] ||
|- align="center"
| align="left"| {{Imagelink|Burner inserter|Burner inserter}} || 0.60 || 0.60 || 0.60 || (1) || 1.19 || 1.19 || 1.19 || (2) || 1.67 || 1.73 || 1.76 || (3)
|- align="center"
| align="left"| {{Imagelink|Inserter|Inserter}} || 0.83 || 0.83 || 0.83 || (1) || 1.64 || 1.64 || 1.64 || (2) || 2.25 || 2.37 || 2.43 || (3)
|- align="center"
| align="left"| {{Imagelink|Long handed inserter|Long handed inserter}} || 1.20 || 1.20 || 1.20 || (1) || 2.35 || 2.35 || 2.35 || (2) || 3.10 || 3.33 || 3.46 || (3)
|- align="center"
| align="left"| {{Imagelink|Fast inserter|Fast inserter}} {{Imagelink|Filter inserter|Filter inserter}} || 2.31 || 2.31 || 2.31 || (1) || 4.44 || 4.44 || 4.44 || (2) || 5.29 || 6.00 || 6.43 || (3)
|- align="center"
| align="left"| {{Imagelink|Stack inserter|Stack inserter}} {{imagelink|stack_filter_inserter|Stack filter inserter}} || 4.44 || 4.44 || 4.44 || (2) || 5.71 || 7.06 || 7.74 || (4) || 6.79 || 10.91 || 13.85 || (12)
|-
|}

===Belt to chest (perpendicular)===

'''Note:''' Experimental data from 0.17

When picking items from a belt, many more factors come into play besides belt fullness:

* How fast the items move (i.e. if they are queued up on the belt or move at belt speed).
* Whether the belt is perpendicular to the inserter or approaches it head on.
* Whether items are on the near or far lane of a perpendicular belt.
* Whether the belt turns or not, and whether the items are in the inner or outer side of the bend.
* If the belt is an underground entrance or exit. This shortens the time items are visible to the inserter for pickup.
* All sorts of intricate timing factors between the inserter and the items on the belt, since the game simulates the arm homing in on every item.

The test setup used below is with an inserter taking items from a perpendicular belt with items on the far lane only. The belt is fully compressed and timings are both for items that move at full speed and queued up as much as possible. Values are given for the stack sizes at three different [[inserter capacity bonus (research)|capacity bonus]] levels.

{| class="wikitable"
! rowspan=4 | Type
! colspan=15 | Items/second at [[inserter capacity bonus (research)|capacity bonus]] level (stack size)
|-
! colspan=5 | No capacity bonus
! colspan=5 | Capacity bonus 2
! colspan=5 | Capacity bonus 7
|-
! colspan=3 | Items at belt speed
! rowspan=2 | Items queued up
! rowspan=2 |
! colspan=3 | Items at belt speed
! rowspan=2 | Items queued up
! rowspan=2 |
! colspan=3 | Items at belt speed
! rowspan=2 | Items queued up
! rowspan=2 |
|-
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]]
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]]
! [[File:Transport belt.png|link=Transport belt]] || [[File:Fast transport belt.png|link=Fast transport belt]] || [[File:Express transport belt.png|link=Express transport belt]]
|- align="center"
| align="left"| {{Imagelink|Burner inserter}} || 0.60 || '''0.63''' || 0.50 || 0.64 || (1) || 1.11 || '''1.20''' || 1.13 || 1.26 || (2) || '''1.61''' || '''1.61''' || '''1.61''' || 1.86 || (3)
|- align="center"
| align="left"| {{Imagelink|Inserter}} || '''0.94''' || '''0.94''' || '''0.94''' || 0.88 || (1) || '''1.67''' || '''1.67''' || 1.50 || 1.74 || (2) || '''2.50''' || 2.25 || 2.25 || 2.54 || (3)
|- align="center"
| align="left"| {{Imagelink|Long handed inserter}} || 1.18 || 1.18 || '''1.25''' || 1.20 || (1) || 2.20 || 2.31 || '''2.40''' || 2.40 || (2) || 3.21 || 3.21 || '''3.46''' || 3.40 || (3)
|- align="center"
| align="left"| {{Imagelink|Fast inserter}} {{Imagelink|Filter inserter}} || '''2.50''' || 2.31 || '''2.50''' || 2.50 || (1) || 4.50 || 4.29 || '''5.00''' || 4.80 || (2) || '''6.43''' || 6.00 || '''6.43''' || 6.43 || (3)
|- align="center"
| align="left"| {{Imagelink|Stack inserter}} {{imagelink|Stack filter inserter}} || 4.50 || 4.29 || '''5.00''' ||4.80 || (2) || 7.50 || 7.50 || '''8.00''' || 7.50 / 8.57 / 8.28 * || (4) || 7.50 || 11.25 || '''15.00''' || 7.50 / 13.09 / 15.32 * || (12)
|-
|}

<nowiki>*)</nowiki> Throughput for basic/fast/express belt.

Since there are many more factors involved, these measurements exhibit a more complex pattern than chest-to-belt.

* Boldface cells show for which belt each inserter has the best throughput on each bonus level when items move at belt speed. Higher speed belts mean that inserters have to work harder to catch the fast moving items. The effect is most noticeable for slower inserters and smaller stack sizes.
* When items are queued up the belt type hardly matters, so there is only a single column for that. The exceptions are the stack inserters - for basic transport belts it's the belt that sets the limit for stack sizes above 4, and there is also a notable difference between fast and express belts.

=== Belt to Chest (facing inserter) ===

'''Note:''' Experimental data from 0.17

When picking up items from a belt facing the inserter, there are multiple small differences between different setups. The following throughput tests are performed with [[express transport belt]]s and [[stack inserter]]s with the maximum [[inserter capacity bonus (research)|capacity bonus]].
Each setup in the following picture shows the amount of ticks per cycle of the inserter and the amount of items per second the inserter moves. These measurements are consistent in all orientations of the setup.

[[File:Inserter_belt_to_chest_throughput.png|900px]]

==See Also==
* [[Electric system]]
* [[Belt transport system]]
* [[Inserter capacity bonus (research)]]: Inserter moves more than an item per turn.

{{C|Inserters}}

Transport belts/Physics/zh

2019-08-23T05:48:14Z

Wangsunan:

{{Languages}}

异星工厂中的[[belt transport system/zh|传送带运输系统]]可以称作是游戏中最为精细的模拟系统。箱子及其他容器中的物品只是一个总数，传送带上的物品曾一度[https://www.factorio.com/blog/post/fff-176 优化为整体]进行移动，但现在传送带上的每个物品都是一个独立的对象，包括他们被机械臂抓起或放下时。这将导致一些错综复杂的行为，尤其当涉及到[[Inserters/zh#Inserter_Throughput/zh|机械臂运输量]]的时候。

在异星工厂中所有屏幕上的物品都在内存中是一个真实的对象并且遵循着游戏引擎的规则。作为一个模拟游戏，这不是典型的常见的。一个贴切的例子就是在旧版本的模拟城市中，并没有模拟每一个城市中的住户。

这是受限于CPU的性能。实时物理模拟最多同时有100,000个对象，对于一个模拟游戏来说是少见的。异星工厂游戏引擎创建了一个精确的、可复用的模拟异星工厂世界，它是如此的精确，可以被用于计算一些惊人惊异的传送带的特性。

== 传送带属性 ==
* '''密度'''：密度指单位长度传送带上可以放置多少物品，计量单位是单侧每[[Map_structure#Tile|格]]物品数。直线传送带的密度是4，这与传送带种类及物品种类无关。传送带密度与把物品扔到地上（使用Z键）的密度有可能不一致。

* '''速度'''：物品在传送带上的速度计量单位通常是'''格/[[game-second|秒]]'''，但需要注意的是，实际计算单位是'''[[Types/Position|位置]](1/256格)/刻（1/60秒）'''。更多内容详见下文。[[transport belt/zh|基础传送带]]的速度是1.875格/秒，[[Fast transport belt/zh|高速传送带]]的速度是基础传送带的2倍，[[express transport belt/zh|极速传送带]]的速度是基础传送带的3倍。

* '''吞吐量'''：吞吐量指每秒有多少物品从一格运送至下一格，计算方法是密度（物品/格）乘以速度（格/秒）。例如，基础传送带单侧吞吐量是 4 * 1.875 = 7.5物品/秒，双侧吞吐量翻倍，即15物品/秒。

* '''压缩'''：传送带上物品之间如果完全没有空间，则被称为''完全压缩''，否则只是部分被压缩，且无法达到最优吞吐量。将物品放到传送带上的设备——[[inserters/zh|机械臂]], [[splitters/zh|分流器]]，从侧面引入的另一条传送带，采矿机等等——会将传送带上物品间的小空隙[https://forums.factorio.com/viewtopic.php?f=3&t=57993 扩大为足够物品放入的空间]。这意味着传送带在饱和时会自行达到完全压缩状态。

* '''侧'''：传送带有左右两侧，无论传送带如何弯曲，每一侧的密度和速度均为固定值不受影响。转角传送带的两侧速度一样，但内侧比外侧更短，所以内侧物品将比外侧物品先离开转角。

== 传送带速度 ==
通过上面的数据，我们可以计算出三种传送带的速度和吞吐量。游戏中的实际情况与下列数据一致。

{| class="wikitable"
! rowspan=2 | 传送带类型 || colspan=2 | 速度 || colspan=4 | 吞吐量
|-
! 传送带类型 || 格/秒 || 单侧, 物品/秒 || 单侧, 物品/分钟 || 双侧, 物品/秒 ||双侧, 物品/分钟
|- align="center"
| align="left" | {{Imagelink|Transport belt|Transport belt/zh}} || 1 || 1.875 || 7.5 || 450 || 15 || 900
|- align="center"
| align="left" | {{Imagelink|Fast transport belt|Fast transport belt/zh}} || 2 || 3.75 || 15 || 900 || 30 || 1800
|- align="center"
| align="left" | {{Imagelink|Express transport belt|Express transport belt/zh}} || 3 || 5.625 || 22.5 || 1350 || 45 || 2700
|}

== 传送带上的物品 ==

正如之前所说，物品在传送带上以压缩的状态和一定的密度占据各自空间。事实上，传送带上的每个物品在每个时刻精确地位于某一[[Map_structure#Tile|格]]传送带上。

举例来说，尽管看上去一个物品可能一半在一格传送带而另一半在下一格传送带上，它实际上精确地位于其中一格传送带上：
* 如果这个物品所在的那格传送带停止，物品将停止传送；否则物品将继续传送——除此之外没有其他状态。
* 如果用这两个格传送带组成电路网络并对他们传送的物品进行[[Belt_transport_system#Circuit_network|识别]]，就能发现这个物品仅被识别了一次。
* 机械臂只能抓取逻辑层面位于其面前传送带格上的物品，无法抓取相邻传送带格的物品。

从这个意义上来说，我们可以把传送带上的物品看做相互之间有最小距离的一个个点，这比将其看做一个个相邻且具有一定面积的物品有时更有用。对于涉及传送带的计算和包含传送带的电路系统来说，我们并不关心这些“中心点”在图上的位置，虽然看上去它们是在中心位置:

[[Image:Belts-with-one-tick-offsets.png|center]]

上面这幅图中，相邻传送带之间有1刻的延迟。在同一时刻停止上面一排传送带格的传输，导致最下端的物品延伸出了不同长度。最左边传送带的物品几乎向下一个传送带格延伸出一半长度，这意味着物品的中心点最接近停止的传送带格的边缘。

下面的原理图展示了物品在两个直线[[fast transport belt|高速传送带]]上移动时每一刻输出信号情况。物品的中心点标识为<code>*</code>。（传送格1与传送格2之间的空格只是为了看得更清楚——游戏中两格传送带间并没有空隙。）

<pre>
刻传送格 1 传送格 2 传送格1输出信号传送格2输出信号
|------------------------------| |------------------------------| 脉冲保持脉冲持续
0 <---*--> <---*--> <---*-- ><---*--> <---*--> 0 3 0 2
1 <---*--> <---*--> <---* --><---*--> <---*--> 0 3 0 2
2 <---*--> <---*--> <-- -*--><---*--> <---*-- 0 2 1 3
3 <---*--> <---*--> < ---*--><---*--> <---* 0 2 0 3
4 -> <---*--> <---*--> <---*--><---*--> <-- 0 2 0 2
5 *--> <---*--> <---*- -> <---*--><---*--> < 1 3 0 2
6 --*--> <---*--> <--- *--> <---*--><---*--> 0 2 1 3
7 <---*--> <---*--> <- --*--> <---*--><---*--> 0 2 0 3
8 <---*--> <---*--> <---*--> <---*--><---*--> 0 2 0 3
</pre>

== 传送带位置和长度 ==

[https://forums.factorio.com/viewtopic.php?f=5&t=70055 传送带精确测量]显示转角传送带的外侧比直线传送带长1.15234375倍（295/256）。这意味着每格直线传送带有256个''[[Types/Position|位置]]''供物品放置，尽管物品所在的精确位置只能通过间接手段来测量。

以下是不同种类传送带以位置度量的速度或长度：

{| class="wikitable"
! colspan=2 | 情形 || 位置数
|-
| colspan=2 | [[transport belt/zh|基础传送带]]速度，每刻 || align="center" | 8
|-
| colspan=2 | [[Fast transport belt/zh|高速传送带]]速度，每刻 || align="center" | 16
|-
| colspan=2 | [[Express transport belt/zh|极速传送带]]速度，每刻 || align="center" | 24
|-
| colspan=2 | 传送带上一个物品的长度（任意速度下） || align="center" | 64
|-
| colspan=2 | 一格直线传送带、地下传送带、分流器单侧长度 || align="center" | 256
|-
| colspan=2 | 转角传送带内侧长度 || align="center" | 106
|-
| colspan=2 | 转角传送带外侧长度 || align="center" | 295
|-
| style="border-right: 0px" | 一条直线传送带远侧汇入另一条传送带或地下传送带出口的长度
| style="border-left: 0px" | [[Image:Sideload-late.gif]] || align="center" | 68
|-
| style="border-right: 0px" | 一条直线传送带近侧汇入另一条传送带或地下传送带入口的长度
| style="border-left: 0px" | [[Image:Sideload-early.gif]] || align="center" | 188
|}

举例说明，利用这些数据，我们可以推断出基础传送带的速度:

: 8 (位置/刻) / 256 (位置/格) * 60 (刻/秒) = 1.875 格/秒

相应的单侧吞吐量为:

: 8 (位置/刻) / 64 (位置/物品) * 60 (刻/秒) = 7.5 物品/秒

== 参见 ==
* [[Belt transport system/zh|传送带运输系统]]
** [[Transport belts/zh|传送带]]
* [http://www.conveyorbeltguide.com/ 真实传送带的一些常用信息]
* Jan 04 FFF #276: [https://www.factorio.com/blog/post/fff-276 Belt item spacing & Script rendering]
* Feb 03 FFF #176: [https://www.factorio.com/blog/post/fff-176 Belts optimization for 0.15]
* [https://forums.factorio.com/viewtopic.php?f=5&t=70055 Accurate belt segment measurements] (discusses 0.17)

{{C|Belt transport system}}

User:Wangsunan

2019-08-23T01:15:04Z

Wangsunan:

I love Factorio!

User:Wangsunan

2018-05-25T01:14:03Z

Wangsunan:

I love Factorio!
As a Chinese player, I'll help create some zh Wiki pages.