2) minor diameter blasting hole
小直径炮眼
1.
Application of minor diameter blasting hole and minor diameter explosive to tunneling blasting in coal;
小直径炮眼小直径药卷在煤巷掘进中的应用
3) large hole diameter perforation
大直径炮眼
4) smaller diameter blast hole
小直径炮孔
1.
The drilling speed of smaller diameter blast holes was compared with that of bigger diameter blast holes,based on the blasting result of smaller explosive cartridges in combination with the smaller blast holes,the usage of smaller diameter hole blasting is proposed.
比较了小直径炮孔与大直径炮孔在凿岩速度方面的差别 ,介绍了小药卷在小炮孔中取得的爆破效果 ,对推广小直径爆破提出了建
5) diameter hole
直径空眼
1.
Mid-depth parallel cut blast technology of small diameter hole in narrow-bore tunnel;
小断面隧洞小直径空眼中深直眼掏槽爆破技术
6) perforation diameter
孔眼直径
补充资料：炮眼
1.掩蔽工事的火炮射击口。 2.爆破前在岩石上凿的孔，用来装炸药。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条