柯林斯詞典connecting rod 1. N a rod or bar for transmitting motion, esp one that connects a rotating part to a reciprocating part 連桿 返回 connecting rod劍橋詞典a rod that joins two particular moving parts in an engine , especially one joining the piston to the crankshaft in a motor vehicle 連桿（在引擎中起連接作用，尤指汽車曲軸和活塞之間的連桿） 返回 connecting rod