In recent years Petrochina suffered the world hard nut to crack in complicated deep well drilling process in Quele and Dina Tarimu, Yumen Kulongshan, the east of Sichuan and Xinjiang Huoerguosi etc.是什么意思_In recent years Petrochina suffered the world hard nut to crack in complicated deep well drilling process in Quele and Dina Tarimu, Yumen Kulongshan, the east of Sichuan and Xinjiang Huoerguosi etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句