起动方式：空气马达或者电马达。

Starting method: Air motor or electric motor.

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松开钢丝绳是依靠重力的作用，而缠绕钢丝绳则是借助于电马达或柴油机。

The reeling out of the drilling line is powered by gravity and reeling in by an electric motor or diesel engine.

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日本浜松光电公司在加入到摩根·士丹利世界指数以后，上升了6.4%，而日本电产因收购美国艾默生电气公司的马达业务上升了3.8%。

Hamamatsu Photonics gained 6.4% after it was added to the MSCI World Index, while Nidec rose 3.8% on news it will acquire U. S. -based Emerson Electric's motors and controls unit.

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