常見例句雙語例句The returned carrier fluid enters the internal flow path at the base of the tool before crossing over to the annulus above the packer assembly, isolating the annulus.在轉換至封隔器裝置上麪的環(huán)空以前，廻流的攜帶液在工具底部進入內部流動通道，於是將環(huán)空隔離。www.infopetro.com.cn 返回 base packer