... jacking bolt 顶举螺栓 jacking point 千斤顶支承点... jacking screw 顶起螺丝 ...
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Jacking point adapter access panel 千斤顶顶点接头检查面板
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In the jacking point, the water flow approximation, the impact force is big, can not meet the flow outside the flow, the defense is difficult.
在顶冲点，水流逼近，冲击力大，无法迎托水流外移，防守困难。
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