crankpin

详细解释:n. 曲柄销

详细解释：

crankpin 也作 crank pin

n.（名词）
A bar or cylinder in the arm of a crank to which a reciprocating member or connecting rod is attached.
曲柄栓：一种在曲柄上用以连接往复式发动机部件或连杆的长棒或圆筒