基本解釋[機械工程]球閥英漢例句雙語例句The superiority and structure characteristics of Polyethylene(PE) glove valve compared with metallic valve, and its shortcoming and the improvement were discussed.論述了PE球閥的優(yōu)點及結構特點,并對其不足之處進行了改進。glove valve更多例句詞組短語短語polyethylene glove valve 聚乙烯球閥glove valve更多詞組專業(yè)釋義機械工程球閥