positioning piston定位: fixed position; location; or ...活塞: plunger; stop; bibb cock; bi ...定位活版盘: register galley单位活塞排量产冷量: refrigerating effect per unit of swept volume活塞杆定位销: split pin for set piston rod下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:定位活塞,即可在微信中查询翻译