在机架上设有摇臂驱动电机，一曲柄及曲柄连接杆铰接在该电机的轴和第一平行连杆之间。
The frame is provided with a rocker driving motor, a crank and a crank connecting rod hinged between the motor and the first link rod.
这 个杆件定理中使用的一般意义上包括凸轮，齿轮，和其他构件除了曲柄、连杆和 其他引脚连接组件。
The word link is used in a general sense to include cams, gears, and other machine members in addition to cranks, connecting rods and other pin-connected components.
一种新十字头连接结构，由活塞杆、球面垫圈、十字头、十字 头销和连杆组成。
The utility model relates to a novel crosshead connecting structure which is composed of a cylinder rod, a spherical washer, a crosshead, a cross pin and a connecting rod;
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