往复运动 wǎngfùyùndòng reciprocating motion Definitions Defs Origin Strokes Stroke Words Sentences Sents 往复运动 往復運動 wǎngfùyùndòng reciprocating motion backwards and forwards action, such as that of a piston or pump; reciprocating motion
往复运动 往復運動 wǎngfùyùndòng reciprocating motion backwards and forwards action, such as that of a piston or pump; reciprocating motion
