常見例句雙語例句These appliances have the British Gas seal of approval.這些器具有英國煤氣公司認可的印章。dict.cnValve can turn 90 degree working in testing course, especial suitable for property experiments of gas seal.閥門在試驗過程中可翻轉(zhuǎn)90度工作,特別適用氣密封性能試驗。The behavior of the start up process of dry gas seal (DGS), which has great significance in engineering was studied based on the steady state analysis.鑒于干式氣體密封啟動過程的重要工程意義,基于穩(wěn)態(tài)分析方法研究了該種密封的開啟特性。www.hgxb.com.cn權威例句In order to do this the company needs to hermetically seal the drives to prevent He gas leakage over the life of the drive—no mean feat.FORBES: Rare Gases and Fine LinesThe authors argue that even quakes that are imperceptible to humans can damage the caprock seal of CO2 repositories enough to release the gas back into the atmosphere.ECONOMIST: Carbon capture: Going underground The 返回 gas seal