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- The paper carefully analyzes bolt supporting system, and measures the parameters of coal wall rock in Fuxin diggings. 本文对锚杆支护理论进行了系统分析，并对阜新矿区煤巷围岩的参数进行了实验测定。
- CIR testing system is established,and the model shearer and model coal wall are designed and manufactured.The control system is manufactured. 建立了采煤机煤岩界面识别物理模拟系统,包括介质模拟和采煤机牵引-截割机构的模拟,研制了试验控制系统。
- Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectie analysis. 在实验中观测了瓦斯自然上浮运动现象，通过理论分析，得出煤壁瓦斯自然上浮的边界层方程。
- Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectic analysis. 在实验中观测了瓦斯自然上浮运动现象,通过理论分析,得出煤壁瓦斯自然上浮的边界层方程。
- Abstract： Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectie analysis. 摘 要： 在实验中观测了瓦斯自然上浮运动现象，通过理论分析，得出煤壁瓦斯自然上浮的边界层方程。
- type of coal wall being pushing out overall 整体推出型
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- Mechainsm of Natural Buoying up of Methane Close to Coal Wall 煤壁瓦斯自然上浮运动机理
- 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。
- Keywords roof brokenness;coal wall caving;replacing columns; 顶板破碎;煤壁片帮;更换立柱;
- 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？
