hydraulic coal mining technology
常見(jiàn)例句
- The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
通過(guò)分析近距離保護(hù)層開(kāi)采、水力掏槽法及邊抽邊掘技術(shù)防治煤與瓦斯突出原理及實(shí)踐應(yīng)用，從而有利于煤與瓦斯突出礦井選擇合理有效的防突技術(shù)。 返回 hydraulic coal mining technology