roof caving

roof caving 基本解释

冒顶

roof caving 用法和例句

1、Cause Analysis on Askew of Light Roof Caving Support

轻型放顶煤支架歪架原因分析

2、Analysis for the Roof Caving Reasons of Bolting Support in Coal Roadway

煤巷锚杆支护顶板冒落的原因分析

3、With the roof caving in, there were an increasing number of desertions.

由于大势已去，逃兵的人数日益增多。

4、Simulation of dynamic stress loading in the process of roof caving in gateways left along the goaf

沿空留巷在顶板垮落过程中围岩受力动态模拟研究

5、Practice of first roof caving technology at comprehensive mechanical mining face in steep thick coal seam

急倾斜特厚煤层综放工作面超段高初次放顶的实践

重点词汇

roof n. 屋顶，房屋；最高部，顶部；最高限度；口腔顶部 vt. 给…盖顶；覆盖；保护，庇护

caving n. 洞穴探险