| 1. | Analysis of effects of strata behaviors on face methane emission law
矿压显现对工作面瓦斯涌出规律影响分析 |
| 2. | Study on gas emission law in winning and heading faces in luling coal mine
芦岭煤矿采掘工作面瓦斯涌出规律探索 |
| 3. | Gas emission law and comprehensive gas control technique in low gassy mine
低瓦斯矿井瓦斯涌出规律及综合治理技术 |
| 4. | Research on extraction and emission laws of gas for pressure - relief in protecting coal seams
保护层卸压瓦斯抽采及涌出规律研究 |
| 5. | Inquiring into gas emission law from top slice during slice mining of an extra - thick coal seam
特厚煤层分层开采顶分层瓦斯涌出规律探讨 |
| 6. | Gas emission law and control of gently inclined coal mining face with gateway retained for next sublevel
缓倾斜沿空留巷采煤工作面瓦斯涌出规律及治理 |
| 7. | Companies are gearing up for the next round of emissions laws by relying on a growing list of products and technologies designed to meet and exceed environmental regulations on pollutant exhaust and fuel improvements
汽车厂商要满足下一代的排放法规，达到或超过环保法规对于排放以及燃油改进的要求，就必须依赖于一系列的新的技术和产品。 |
