Chinese ⇄ English

周边孔
avia.	hole periphery
expl.	profile hole
hydroel.st.	peripheral hole
tech.	rim holes
周边孔地下爆破时，在开挖断面周边上钻凿的炮孔,又称轮廓炮孔、修边炮孔和外帮炮孔。为了使爆破的轮廓形状完整，近来大多采用控制爆破的方法布置和装填周边炮孔
expl.	contour perimeter hole

周边孔 : 19 phrases in 5 subjects

Automobiles	1
Engineering geology	2
Explosives and Explosive Ordnance Disposal	11
Oil / petroleum	1
Technology	4