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1 definition found

From: MDBG CC-CEDICT Chinese-English Dictionary 漢英字典

 往復運動 [ㄨㄤˇ ㄈㄨˋ ㄩㄣˋ ㄉㄨㄥˋ; wang3 fu4 yun4 dong4]
 backwards and forwards action (e.g. of piston or pump)
 reciprocating motion