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- Rational Millisecond Time Setting for Coal Blasting Mining 爆破采煤合理微差时间确定
- There was a terrible blast in the coal mines. 矿坑中发生了可怕的爆炸声。
- 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。
- Influencing factors and improving methods for recovery ratio of sub-level caving coal blasting mining 炮采放顶煤回采率影响因素与提高方法
- 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。
- Test on blasting parameter optimization of coal blasting mining face in thin seam with partings 含煤矸石薄煤层炮采面爆破参数的优化试验
- 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。
- Millisecond blasting technology applied to improve lump coal rate of coal blasting mining face 微差爆破提高炮采工作面块煤率的技术
- 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。
- 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?
- Calculation of blasting borehole numbers for one blasting in coal blasting mining face 炮采工作面一次起爆炮眼数量的计算
- 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。