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- pneumatic coal pick 风镐
- Pneumatic Coal Dust Conveying System by Air Exhaust 乏气送粉
- The Usage of Non-mechanical Pneumatic Coal Feeder on the CFB Boiler 非机械式气力播煤装置在循环流化床锅炉中的应用
- Pneumatic Coal Powder Conveying System and Its Application in Adjacent Boilers 邻炉气力输粉系统及应用分析
- 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。
- 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。
- 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?
- The retiring miner delivered his pneumatic drill over to his successor. 这位即将退休的矿工把风钻移交给他的接班人。
- Pneumatic signals will travel only at sonic speeds. 气动信号的传输速度仅仅相当于音速。
- 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。
- When were pneumatic tyres invented? 充气轮胎是什么时间发明的?