Water delivery and injectionline: cleanup scale and sediment.
输水、注水管线：清除水垢、沉积物。
2
The injection mandrel is equipped with a port - and check-valve system to direct fluid pumped down the annulus or injectionline into the production conduit.
配注器装有孔口阀和单向阀系统，使泵入的流体沿环空向下或沿注入管线向下进入生产导管。
3
To one of normal saline by intraperitoneal injectionline, and the remaining three groups are the rule of law model bilirubin bilirubin encephalopathy model.