岩块孔block hole 炮孔间距spacing；hole spacing；spacing in drilling 炮孔直径 borehole diameter；diameter of blasthole or borehole ..
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bottom hole spacing [油气] 井底距离
conductor to hole spacing 导体孔间隔
pin hole spacing 销孔间距
feed hole spacing 输送孔间隔
hole spacing pattern parameter 孔网参数
feed-hole spacing 输送孔间隔
Bolt Hole Spacing should be consistent with the allowable deviation of norms.
螺栓孔孔距的允许偏差应符合规范的规定。
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
钻孔使用配套冲击电钻。钻孔时，孔洞间距与孔洞深度应满足设计要求。
Only by controlling fairly the hole spacing, secondary grouting time interval, number of secondary grouting and seal around gro...
要提高施工工艺水平，应掌握好布孔间距、复灌间隔时间、复灌次数及注浆管周围封堵等环节。
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