英语语法分析

Large areas of emptied stopes pose great dangers to the security production upon decades of mining.

某钨矿经过几十年开采留下大量采空区，并存在较大安全隐患。

Attachment air is one of the important characteristics of the air-flow structure in flat chamber stopes.

附壁风流是扁平型峒室采场风流结构的重要特征之一。

Study on the field stability at the mine abandoned stopes is a key step whether a construction can proceed or not.

煤矿废弃采空区场地稳定性研究是决定能否进行建筑的关键步骤。