The fuel cells could be used as auxiliary power units to produce electricity when an aircraft is on the ground, for example, allowing its engines to be turned off.
燃料电池可以当做辅助供电单元使用，比如，当飞机在地面时，可以允许关闭飞机发动机。
So meanwhile, back at the base, keep expanding your production and slowly build up a powerful corps of Firebats, Hellions, Marines, and any other ground units available for training.
那么，回到基地，不断拓展你的生产和慢慢建立一个强大的Firebats,Hellions、海军陆战队、和其他地面部队提供培训。
Ground water is used as the cooling water source of heat pump units in summer a great deal of production sewage is used as extracted heat sink for units in winter.
夏季利用地下水作为水源热泵机组的冷却水，冬季利用该厂丰富的污水作为机组的吸热源。
The project brings together 90 housing units on six upper floors, and a home for young autistic workers on the ground floor.
该项目在顶部的六层汇集了90套住房，一层是一个患有自闭症的青年工人之家。
Airline ground service management is to schedule ground support equipment units for the purpose to improve the safety and efficiency of aircraft maintenance and departure on the turn time.
航空地面作业管理是关于机场各种地面服务设备的安排调度，以保证航班飞机的正常运行。
Airline ground service management is to schedule ground support equipment units for the purpose to improve the safety and efficiency of aircraft maintenance and departure on the turn time.
航空地面作业管理是关于机场各种地面服务设备的安排调度，以保证航班飞机的正常运行。
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