... 铣键槽Key Way、 车卡环槽Snap Ring Grooves、 径向打孔Radial Holes Drilled and Tapped、 ...
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Because the inclined snap ring grooves are added, the screen pipe can enter and exit the well favorably and the operation is also convenient.
由于增加了斜形卡环槽，使得筛管出入井顺利，作业也方便。
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