基本解釋氦泄漏試驗英漢例句雙語例句Testing progressing and methods for its main points were described especially according to the characteristic of helium-leak apparatus and structure of urea tower.確定了尿素合成塔的氦泄漏試驗方法,并對其要點進行了闡述;helium leak test更多例句詞組短語短語Method for helium leak testing 氦泄漏測試方法helium leak test更多詞組專業(yè)釋義材料科學氦漏氣試驗