Attached to that structure are eight mechanical arms, each powered by its own direct current electric motor.

连接到该结构八个机械臂，每个搭载自己的直流电动机。

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A large disc-shaped rectifying antenna attached to the fuselage harvested the microwave energy, turning it into direct current to power an electric motor attached to the plane's propeller.

机身上的圆盘形整流天线能接收地面传输的微波能，将其转化为直流电为飞机推进器上的电动机供能。

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Based on the tractive distinction of electric industrial trucks, this paper discusses the problem of matching the direct-current tractive motor with the tractive storage battery.

本文根据电动工业车辆的牵引特性，讨论了直流牵引电动机和牵引蓄电池的匹配问题。

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