依据多作用内曲线径向柱塞式低速大扭矩气马达的工作原理，分析了其定子内表面曲线对气马达性能的影响；

Influences of earn surface curves of an air motor with low-speed and high-torque output characteristics on the performance of the multilobed internal curve, radial pluggerare analysed.

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他说，最近几年德里通过把黄包车高污染的两冲程马达改装成使用更清洁的液化天然气从而减少了污染物的排放。

In recent years, Delhi reduced pollution after rickshaws which had used high-polluting two-stroke engines switched to using cleaner-burning liquefied natural gas, he said.

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收放卷单元：采用伺服马达，自动控制张力，同时采用无芯式气胀轴加料。

Accept rewind unit:using the servo motor, automatic control tension, adopted without rui chirise shaft clip material.

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