Snubbing unit with double-balance is used in plu gging tubing.It is a mechanical snubbing tool which prevent oil jet during produ ction.It can meet the requirements of nonmud kill job.是什么意思_Snubbing unit with double-balance is used in plu gging tubing.It is a mechanical snubbing tool which prevent oil jet during produ ction.It can meet the requirements of nonmud kill job.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句