On the choice of power, the vehicle mounted wheelchair can use hydraulic drive, pneumatic drive, electric push rod and electric motor.

车载式轮椅自动升降机在动力的选择方面，可以采用液压传动、气压传动、电动推杆和电机等方式。

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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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LI Jianfan. Pneumatic Drive System Dynamics [m]. Guangzhou: South China University of Technology Press, 1991.

[5]李建藩。气动传动系统动力学[M]。广州：华南理工大学出版社，1991。

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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