pick coal mining的意思|示意
美 / /
英 / /
挑煤开采
pick coal mining的网络常见释义
风镐采煤 ... 过渡性掏槽transient cut 风镐采煤pick coal mining 急倾斜采煤法sharp inclined coal cutting method ...
pick coal mining相关例句
The damage styles of cast-in cutting pick and hard-solder forging cutting pick are analyzedaccording to the comparing experiment under coal mining well.
通过井下采煤对比试验，分析了镶铸截齿与锻造针焊截齿的损坏特点。