Complex drainage oil recovery technology is a new drainage oil recov ery technique which was explored in the high-oilrecovery period of oil field.是什么意思_Complex drainage oil recovery technology is a new drainage oil recov ery technique which was explored in the high-oilrecovery period of oil field.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句