1·The average coal seam here is three feet thick.
这里的煤层平均为3英尺厚。
—— 《柯林斯英汉双解大词典》
2·They were giant, sometimes 8 feet long , and many of them lived in the swampy pools in which our coal seam, or layer, or formed.
它们体型巨大，有时有8英尺长，其中许多生活在沼泽地里，我们的煤层就是在这里形成的。
3·The permeability of coal seam is the crucial problem.
煤层气储层的渗透性是煤层气开发的关键。
4·The influence of aquifer upon the mining coal seam is estimated.
预测了侏罗系含水层对煤层开采的影响。
5·The spontaneous combustion of coal seam endangers the safe production.
井下煤层自燃严重危害着安全生产。
6·Factors affected coal seam permeability change and its law is analyzed.
分析了煤层透气性变化的影响因素及变化规律。
7·Rockburst is catastrophic failure phenomena of rock mass and coal seam.
冲击地压是一种煤岩体的突然破坏现象。
8·The gas distributed rule of coal seam is the base of preventing gas hazard.
煤层瓦斯赋存规律研究是瓦斯灾害防治的基础。
9·Coal seam faults refer to those parallel to or intersected with seam at small angles.
顺煤断层是指断面沿煤层或与煤层呈小角度相交的断层。
10·The phenomenon of water vaporization during infusing water into coal seam was studied.
对煤层注水的水分蒸发现象进行了研究；