1) volley of guns for perforation
射孔排炮
1.
Traditional designing method of volley of guns for perforation is based on manual calculation,which consists of a lot of calculation and is quite time-consuming,and errors occur easily in the process.
传统的射孔排炮方法是完全的手工计算,计算工作量大、费时费力且容易出错。
2) drainage of explosive hole
炮孔排水
3) perforations
炮眼(射孔)
4) drilling pattern
炮孔排列法
5) Blast hole bulling
炮孔装填与排段
6) An opening in a fortified wall;an embrasure.
射击孔，炮眼城墙上的开孔;炮眼
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
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