One or two optical units can be fitted into the cockpit to suit the number of crew members onboard the aircraft.

根据飞机驾驶员人数的不同，可以选择在座舱内安装一套或是两套光学系统。

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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。

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Saab will deliver two complete TUAV systems, including the aircraft, ground stations, intelligence units and ancillary equipment.

Saab将提供两套完整的战术无人机系统，包括飞机、地面站、情报单位及辅助设备。

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Air-quality management with measures to reduce emissions from aircraft, vehicles, auxiliary power units (APUs) and ground power units (GPU).

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The committee heard evidence that entire combat units, such as aircraft and warships, could be rendered completely dysfunctional by an attack.

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The defence ministry says that to sustain a long-term operation, with a proper rotation system, it ideally likes to have at its disposal three or four ships or aircraft, and up to five army units, for every one deployed at any given time.

ECONOMIST: The army