表明孔壁粗糙度越大，相应的桩侧阻力就越大，从而提高钻孔灌注桩的承载力。
The result shows that bigger hole coarsenesses have bigger side pile resistance so as to improve the bearing capacity of bored - pile.
工作台进给的平稳性会影响孔壁的表面粗糙度，严重时会影响孔的尺寸精度。
The stability of the worktable will affect the surface roughness of the hole wall, which will affect the hole size precision seriously.
工作台进给的平稳性会影响孔壁的表面粗糙度，严重时会影响孔的尺寸精度。
The stability of the worktable will affect the surface roughness of the hole wall, which will affect the hole size precision seriously.
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