2。1、曲柄摇杆四连杆联接点：
为了形成一个曲柄摇杆连杆，每个连杆长度之间的关系需要满足条件：
曲柄摇杆机构英文文献和中文翻译(9):http://www.youerw.com/fanyi/lunwen_82614.html
2。1、曲柄摇杆四连杆联接点：
为了形成一个曲柄摇杆连杆，每个连杆长度之间的关系需要满足条件：
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