眼科手术术语。系金针开内障八法名称之一。即手术后出针的手法和要求。《目经大成》卷二：“回针将障送至护睛水内尽处，迟迟出针之半，少息再出，恐障复还原位。”参见拨内障手法条。
防冲蚀短管除了壁厚大于正常完井部件外，其管壁通常经过处理，以阻止冲蚀作用的发生，因而不会引起射孔孔眼的接近。
In addition to being heavier than normal completion components, the wall of a blast joint is often treated to resist the jetting action that may result in the proximity of the perforations.
置于任一射孔层段的一段厚壁油管，这时生产油管必须通过此射孔层段，如在多层完井中所要求的。
A section of heavy walled tubing that is placed across any perforated interval through which the production tubing must pass, such as may be required in multiple zone completions.
相对较短的厚壁完井部件，它装在预计发生紊流的区域。
A relatively short, heavy-walled completion component installed in areas where turbulence is anticipated.
应用推荐