On the basis of this, the plastic deformation of large-scale cylinder pieces under reaming process and its main influencing factors were analyzed using finite element simulation means.
在此基础上，应用数值模拟方法研究了圆筒锻件扩孔过程的塑性变形及其主要影响因素。
Field tests indicate that the auger-type under-reaming tools can be used in construction of under-reamed piles in various formations.
试验表明，该种钻具可以满足在各类地层中的施工要求。
Field tests indicate that the auger-type under-reaming tools can be used in construction of under-reamed piles in various formations.
试验表明，该种钻具可以满足在各类地层中的施工要求。
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