原mod：https://mods.factorio.com/mod/ElectricTrain

修改部分：

1. 去掉了原mod中的中间产物
2. 调整了分组，合并到原版的火车分组里
3. 科技包消耗调整，1级电动火车（红绿蓝）2级电动火车（红绿蓝紫）3级电动火车（红绿蓝紫黄）
4. 火车配方调整，1级电动火车（火车+电动机+绿板）2级电动火车（1级电车+电动机+红板）3级电动火车（2级电车+电动机+蓝板）
5. 添加了中文语言

Original mod: https://mods.factorio.com/mod/ElectricTrain

Modified part:

1. Remove the intermediate products in the original mod
2. The grouping has been adjusted and merged into the original train grouping
3. Adjustment of science and technology package consumption: Level 1 electric train (red, green and blue) Level 2 electric train (red, green, blue and purple) Level 3 electric train (red, green, blue, purple and yellow)
4. Adjustment of train formula: Level 1 electric train (train+motor+green board) Level 2 electric train (Level 1 tram+motor+red board) Level 3 electric train (Level 2 tram+motor+blue board)
5. Added Chinese language