单位
以下的单位在异星工厂中非常重要。
不是所有的游戏元素都是完全模拟现实中的物理特性（比如物体的重量，确切来说游戏中的物品都没有重量，重量被反应在一组物品可以堆叠多少个里），但是在本页中出现的单位是模拟现实中的！
能量
能量被定义为单位时间内所做的功。
瓦特 (W)
最基础的能量单位是1瓦特（W），其定义为1W = 1J / 1s。或者说每秒做功一焦耳。
游戏中一般使用更大的单位，称为千瓦（kW）和兆瓦(MW)。
灯在打开时候消耗5kW。一个雷达在活动时消耗300kW —— 相当于60盏灯。一台蒸汽机能够输出510kW。
功
功被定义为能量转换，或者说能量被“消耗”。
焦耳 (J)
功的基本单位是1焦耳（J），表现为1瓦特的能量在1秒钟内被消耗掉了：1J = 1W * 1s。
在游戏中，燃料是用来做功的。例如，每一个煤被烧掉时产生8kJ。一个碱性蓄电池可以储存5MJ。
这并没有多大意义使用现实世界中的千瓦时（kWh,1 kWh=3600kJ）来计算功，因为游戏运行的比现实世界快或者慢，使用小时来计算没有多少用。
时间
刻 (1/60s)
游戏中的1/60秒。这是在游戏中能控制的最短的时间段。
秒 (s)
一个 游戏秒。这不能担保与真实的一秒相一致。例如，一个低配置的电脑可能无法在现实中的1/60秒内计算完成在一个整刻。
日
一日有25000刻或416.66游戏秒 (= 6.94 游戏分).
距离 / 空间
格
格是既是一个面积单位又是一个距离单位。例如，一个物体的尺寸可表达为“2x2格”，这意味着这个物体占有4平方格或者格²。单位平方格常被简称为格。可以假设一格长度为一米。
块
一块是边长为32格的正方形区域。（1024平方格）
物流
吞吐量
单位时间通过的物品或液体。单位是
物品 / 游戏分钟
... 在传送带上
吞吐量 = 速度 * 密度
详情请见 传送带。
For comparison: A Basic transport belt transports normally about 700 items per game-minute. A Fast transport belt up to 1200 items/min and Express transport belt nearly 1800 items / min. See physic of transport belts for more information.
... for logistic robots
Throughput depends on the distance, the number of robots and their item-stacksize. Let's assume a robot can travel 1 tile per second and can transport only one item at once. It needs also to return. Then this robot can transport 1/2 item per second. If you use 2 you can transport 1 item per second. If you double the distance, we are again at 1/2 item per second.
... for train
(Unfinished. Needs to consider also the loading and unloading time, needs to consider maximum speed...)
Capacity
Basically items per transport-unit. This depends in many cases on the item-type you use. A Cargo wagon has a capacity for 1000 items for ore, or 2000 for steel- or copper-plates.
... in stacks
A Cargo wagon has for example 20 stacks. The capacity of the wagon is 20 stacks. But the capacity of a stack depends on, what type of item you put into, so when stacks come into play, you need to say "Capacity of 20 stack iron-ore".
Density
Is measured in items per tile.
An item, that lays on ground has the size of 0.28 tiles². On one tile we can place 12.752041 items, which means, that we can put in the best case 12 items on one tile. See also physic of transport belts for more information.
... for Belts
For belts this is the same: We have two lanes on a belt, 3.571 items per lane or 7.143 item on one belt.
On belts there comes also another thing into play: Compression. Good compression is, when you fill a belt so, that you come to the maximum density and so to the maximum throughput.
... for stacks/chests
On the first glance, it is simple: A chest has the size of one tile. You have X number of stack in a chest, where you can put Y numbers of items into each, so the density is simply X * Y.
The thing changes, if you use mods, that add chest-like transport boxes, which enables to pack/box items.
See also
(Missing here: Capacity, which is either the volume of something or Productive capacity; Load, which is a measurement about the tightest bottleneck (waiting or running items))