您要查找的是不是：
- On the roof of coal bed are consists of the mudstones in dark-gray or grizzle which will expand met water and wet air, with higher expansion stress and coefficient. 煤层顶板为深灰色和灰色泥岩，该岩石遇水和潮湿空气产生膨胀，膨胀应力和膨胀率大。
- It is a new way of the utilization of coal bed gas. 为井下抽放煤层气的利用提出了一条新的途径。
- Preliminary research on structural law of coal bed beneath nappe in No. 对新集二矿推覆体下煤层构造规律进行了初步研究。
- The stone made a dent in the roof of my car. 我的汽车顶让石头砸了个坑。
- The roof of our house is covered by shingles. 我家的屋顶是用木瓦铺的。
- For measuring exactly on gas content of coal bed,required high core recov ery and short time to hoisting and loa ding. 为了准确测定煤层含气量,要求取心作业必须有高的收获率和尽可能短的提钻及出筒装罐时间。
- The mining of shallow coal bed in Shenfu Mine is seriously threatened by suffosion hazard of coal shaft. 神府矿区浅部煤层开采受到矿井溃砂的严重威胁。
- The roof of the house pitched at a 45°angle. 屋顶倾斜四十五度。
- Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China. 煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；
- The roof of the old house caved in. 那栋旧房子的屋顶塌下了。
- The development of Coal bed Methane (CBM) has made greater progresss in recent years. 摘要近年来，煤层气开发取得了较大进展。
- The roof of the schoolhouse is covered with snow. 校舍的屋顶上覆盖着积雪。
- We heard the rain spattering down on the roof of the hut. 我们听到雨滴滴答答打在小屋的顶上。
- The infection of deep part mining to draining of superficid part water bearing ground,thickness of coal bed and obliquity to mining are analyzed. 分析了覆盖破坏的覆岩岩性及结构对地表移动和覆岩破坏的影响,深部开采对浅部含水层疏干、煤层厚度及倾角对开采条件的影响;
- By the actual simulation of the concrete region, summarizes the investigative method of simulation in the geological evolution history of coal bed gas. 通过对具体地区的实际模拟,总结出了煤层气地质演化史数值模拟研究的方法。
- The roof of that house caved in during the severe storm. 狂风暴雨中那房子的屋顶倒塌了下来。
- The roof of the mine caved in as a result of the explosion. 由于发生爆炸，矿井顶部坍塌了。
- This paper sets forththe Occurrence law and good prospect of coal bed gas in JiXi coalfield by analyzing the char-actelisties of gas Source rock, reservoir and cap rock. 从气源岩特征、煤层气情况、储集层和盖层特征分析入手，阐明了鸡西盆地煤成气赋存规律与远景。
- The roof of the tunnel caved in (on the workmen). 隧道顶坍塌(压住工人).
- The paper has expounded components and several types of coal bed gas and analys ed the influences of microlithotype, matur ity, reservoir pressure and so fort... 对分析煤盆地间、钻孔间以及煤层间煤层气成分的变化具有重要意义。
