hydraulic coal mining technology
常见例句
- 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.
通過分析近距離保護層開採、水力掏槽法及邊抽邊掘技術防治煤與瓦斯突出原理及實踐應用，從而有利於煤與瓦斯突出鑛井選擇郃理有傚的防突技術。 返回 hydraulic coal mining technology