同根派生 piston rings相關(guān)詞英漢例句These bands are called piston rings.這些圈叫做活塞環(huán)。The unrestrained piston ring curve has been analyzed by the finite element method.摘要引入有限元法對活塞環(huán)自由狀態(tài)曲線進行了分析研究。piston rings更多例句