Qijia Sag is one of the important petroleum generative depressions in the Songliao Basin,and the Fuyang oil formation is the main oil-bearing formation.是什么意思_Qijia Sag is one of the important petroleum generative depressions in the Songliao Basin,and the Fuyang oil formation is the main oil-bearing formation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句