coal mining under railway的意思|示意
铁路下采煤
coal mining under railway的网络常见释义
铁路下采煤 ... mining coal under railway 铁路下采煤 coal mining under railway 铁路下采煤 coal mining area railway 矿区铁路 ...
coal mining under railway相关短语
1、 mining coal under railway 铁路下采煤
coal mining under railway相关例句
Mining under the village , the railway and the water is a problem in mining, which is related to the safety and the economic benefit in every coal pit.
“三下”采煤的安全问题是长期以来在采矿中值得注意的问题，它关系到矿井作业的安全和经济效益问题。
The fully mechanized caving coal mining under the railway in mine area will result in difficult maintenance of railway because of great deformation and subsidence speed of terrene and railway.
在矿区铁路下进行放顶煤开采所引起的地表及铁路的变形量大，变形速度快，从而导致矿区铁路维护困难。