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- The application of seismic attribute technology to predict coal roof lithologic character was introduced. 介绍了应用地震属性技术预测煤层顶板岩性的方法。
- The study indicates that according to the formulae of combinatorial key stratum, coal roof weighting step in the 1203 face in Da-liu-ta mining is co the observation value. 结果表明，以该修正的组合关键层破断距公式计算的大柳塔1203工作面的初次来压步距与实测非常接近。
- Test of low slicing with coal roof in thick seam 忻州窑矿厚煤煤层下分层留顶煤开采试验分析
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- Bolting with wire mesh technique in the entry of large section and soft coal roof 大断面松软煤顶巷道锚网支护技术探讨
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- Sand Rock Fissure Water Feature and Prevention in 13 Coal Roof of Zhangji Coal Mine 张集矿13煤层顶板砂岩裂隙水特征及防治
- Pile on more coal the fire is going out. 火快灭了，再加上些煤。
- What can we do with the bituminous coal? 这些烟煤可以用来做什么？
- A coal fell from the fire and burned the mat. 一块煤炭从火中掉出来，烧坏了地席。
- The country is rich in oil and coal. 这个国家石油和煤的资源丰富。
- The smoldering coal or ash of a dying fire. 余烬将要熄灭的火中的冒着烟的煤块或灰烬
