face of hole的意思|示意

Advancing hole is one of local prevent outburst measure at coal road heading face in coal-and-gas outburst mine.

超前钻孔是煤与瓦斯突出矿井中煤巷掘进工作面的局部防突措施之一。

This paper deals with the blasting parameters, working face blast hole patterns and the initiating system in the E-Bid section of the Furong Road Cable Tunnel Construction Project in Changsha.

介绍长沙市芙蓉路电缆隧道e标段掘进的爆破参数、工作面炮孔布置形式及起爆方式。

The construction of a new type anti-pitting tappet with a cast hole in its end face and isothermally treated are described.

介绍了端面直接铸孔并进行等温处理的新型抗点蚀挺杆体的结构和热处理工艺；

After the fixing bolt is completely screwed in the central hole of the screw, the upper end-face of the fixing bolt is lower than the upper end-face of the fixing sleeve pipe.

固定螺钉完全旋入螺杆中心孔后，固定螺钉的上端面低于固定套管的上端面。

If before you go back to a head. Will not give my face hole of despair.

如果你走之前回一下头。就会不舍我满脸绝望的空洞。

It is researched that the bore-hole transient electromagnetic method is applied to detect the water-bearing structures in advanced face of underground coal mines.

利用瞬变电磁法在煤矿井下独头巷道开展了超前探测含水构造的试验研究。