angle of roof

From the control angle of roof stability in face area, UDEC program has been used in analysis of the relationship between the roof stability in face area, the working resistance of support and the distance to face under different top coal conditions.

从端面顶板稳定性控制角度出发，应用数值模拟离散元法分析了不同顶煤条件下端面顶板稳定性与支架工作阻力及端面距的关系。

It is about twelve feet long, and its highest point is about five feet, and then it tapers2 down from the angle of the roof...

这间阁楼差不多有十二尺长，最高的地方有将近五尺，屋顶从尖角的位置向下延伸开来逐渐变得宽阔，就像圆锥那样。

First of all, it put forward the method by designing suitable slope angle of the pitched roof that can save the planning place.

首先，指出了设计适宜的坡屋顶倾斜角度，可以节省规划用地的方法；