man-power digs hole pile 人工挖孔桩
hole bottom power drilling 井下动力钻井
transfer coefficient of hole-bottom power 井底功率传递系数
hole-bottom power drilling 井下动力钻井
Drill hole power 钻孔功率
The pile supporting capacity can be raised 50% after using man-power hole pile mud jacking technology.
采用人工挖孔桩桩端后压浆技术能使桩承载力提高50%。
There are many hidden dangers using man-power hole pile foundation under the high water mark condition.
高水位条件下采用人工挖孔桩基础,存在很多的隐患。
If the black hole eats a star every 30,000 years, that hot plasma could provide enough energy to power the gamma-ray bubbles.
如果这个黑洞每隔30,000年吞掉一颗行星的话,那么这些热等离子就可能为驱动这两个伽马射线泡泡提供足够的能量。
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