The country is level and it is not easy to follow the magnetite seams continuously . 地面是水平的，不容易连续地追踪此矿层。
The walls on the outside were seamed with deep cracks which were a breeding-place for adders . 墙外面深刻的裂缝是蝰蛇生息的场所。
The thicker coal seams are located in a 10-15 km wide belt along which the channel meanders . 较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。
Even within the southern sector, correlation of seams in the pyroxenite series is at present uncertain . 甚至在南段之内，辉岩组中的矿层对比目前也不肯定。
The mines were there, they were old. they were giving out, it did not pay to work the seams . 矿井就在眼前，它们陈旧不堪，煤矿即将挖尽，继续开采又得不偿失。
The first new deal coalition of bussinessmen, workers and farmers came apart at the seams in the spring and the summer of 1934 . 1934年春、夏，第一次新政时期形成的企业家、工人和农民的联盟发生了裂痕。
Pyroxenite or anortlesite partings a fraction of an inch to 2 feet in thickness and tens of feet to hundreds of feet in length are also present in many seams . 在许多矿层中还见到辉岩或斜长岩夹层，厚几分至2尺，长几十到几百尺。
Sub - level caving mining with seam of thickness dirt band 含厚夹矸煤层的综放开采
Mining high gas coal seam with enclosed mining method 封闭式采煤法开采高瓦斯煤层
Features of steep coal seam and its mining technology 急倾斜煤层的特点及采煤工艺
