Because the natural gas countains some corrosion media such as H2S, CO2 and H2O, the downhole tubing is often severely corroded.是什么意思_Because the natural gas countains some corrosion media such as H2S, CO2 and H2O, the downhole tubing is often severely corroded.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句