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The connecting rod little end is connected to the piston pin.
连杆小头连接着活塞销。
youdao
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Research of Heterogeneous Type Piston Pin Boss Hole Closed Loop Processing System.
异型活塞销孔闭环加工系统研究；
youdao
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Research of Heterogeneous Type Piston Pin Boss Hole Closed Loop Processing System.
异型活塞销孔闭环加工系统研究；
youdao