常見例句Vacuum vessel seal structure used in the leak test of a liquid rocket engine turbopump is discussed.論述了某型號液體火箭發(fā)動機渦輪泵高壓低溫靜密封檢漏試驗用真空室密封結(jié)構(gòu)的設(shè)計問題。 返回 leak-tested