Pneumatic drive of the main surface of the main parts of the machining accuracy.

气动驱动装置主要零件的主要表面的加工精度。

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The tester made by aluminum frame, nice shape, clean and convenient loading pneumatic drive.

本测试仪采用铝型材制作框架，造型美观大方，气动传动加载方式清洁方便。

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Pneumatic drive, linear feed. Adjustable head can be pulled to set positions by drive motor.

采用气压传动，水平直线式工进方式，运动机头由电机拖动行走定位。

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Cycling did not appeal to the masses until the introduction of the pneumatic safety bicycle with a chain and sprocket drive (the prototype of the modern design).

FORBES: A Comic Look At The 1890s Bicycle Boom