Define interface between power unit and control unit.

确定功率部分和控制部分之间的接口。

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The power unit for driving the machines is a 50-hp induction motor.

驱动这些机器的动力装置是一台50马力的感应电动机。

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The result is a power unit that is light, compact and remarkably efficient.

从而得到一个轻巧、紧凑以及非常有效率的动力设备。

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United Technologies, which builds the aircraft's auxiliary power unit, said it would also cooperate.

BBC: Dreamliner: Japan and US probe battery maker

Flight 186's auxiliary power unit failed during the wait and the aircraft had to return to a gate.

WSJ: Flight Nightmares Overshadow Airlines�� Improving Record

The Discovery shuttle brought the new power unit to the ISS, docking with the platform late on Tuesday (GMT).

BBC: Spacewalkers bolt in power unit