连杆的大头与曲轴连接，小头与活塞链接。
The connecting rod links its large end to the crankshaft and its small end to the piston.
主要研究了隔膜泵曲柄滑块机构连杆小头与滑块连接副松动的非线性特性。
The primary goal of this research is the non-linear properties of the loose joint of membrane pump's connecting rod and slider.
连杆的小头比安装在曲轴的大头小得多。
The top end of the rod is much smaller than the end that fits on the crankshaft.
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