短语词组短語shrink -ring commutator [電]套環換曏器shrink ring container ring 預應力圈shrink ring commutator 緊圈式換曏器shrink ring of commutator 換曏譜環commutator shrink ring 換曏器箍環Skirt ring shrink 擋油裙環熱套 返回 shrink ring