1) long-hole instead of roadway
以孔代巷
2) roadway retaining and borehole drilling
留巷钻孔法
1.
The technique of coal mining and gas extraction by roadway retaining and borehole drilling;
留巷钻孔法煤与瓦斯共采技术
3) crossing hole at floor roadway
底板巷穿层钻孔
4) replace electricity with heat
以热代电
6) Turning Instead of Grinding
以车代磨
1.
On the basis of analyzing the lack of grinding of heated axial workpiece,this article makes a probe into the feasibility of the experimental process operation of turning instead of grinding.
在分析热后磨削不足的基础上,探讨以车代磨的工艺试验操作的可行性,提出在投入大批量加工时应注意的问题。
2.
This article takes some actual spherical surface processing as an example, analyzes the method of processing spherical surface by turning instead of grinding.
以某型零件中实际球面的加工为例,浅析了球面以车代磨的加工工艺方法,针对加工过程中所遇到的问题,介绍了该类零件的具体加工方法。
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