The structural deformation is the principal geological factor that affects the thickness variation of coal seam on a minefield scale.
构造作用是控制井田范围内煤层厚度变化的主要地质因素。
2
This paper introduces the category, hazard, and program of treatment of minefield border disputes.
介绍了矿区边界纠纷的类别、危害，处理纠纷的程序。
3
As a result, for increasing kill efficiency of intelligent minefield to armored aim in group, intelligent mine is supposed to adopt multiple explosively formed penetrator warhead technology.