系统地介绍了电磁调速电牵引采煤机计算机控制调速系统的构成和制动运行方式，并对电磁调速采煤机的特点进行分析。

Systematically introduce a mining machine draw by electricity and its speed governed by system and way of brake by computers in a mining machine whose speed is governed by electromagnetism.

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由于青藏铁路特殊的自然地理环境和线路条件，为保证列车安全运行，对列车制动系统必须有更高的要求。

Due to the special natural and geographical environment and line conditions, some stricter requirements for the train braking system are needed to ensure the safe train operation.

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LD车轮，车轮组，卷筒组，吊钩组，滑轮组，联轴器，钢丝绳，电缆滑车，运行电机，制动器，减速机，电缆卷筒，超载限制器，标准件。

LD wheel, wheel group, drum group, hook group, pulleys, couplings, wire rope, cable pulley, motor, brake, reducer, cable reel, overload limiter, standard parts.

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