coal seam [地质] 煤层
Coal seam gas 煤层气
thick coal seam [矿业] 厚煤层 ; 特厚煤层
coal seam profile 煤层剖面
shallow coal seam 浅埋煤层
floor of coal seam 煤层底板
roof of coal seam 煤层顶板
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。
The average coal seam here is three feet thick.
这里的煤层平均为3英尺厚。
The hot new product in Queensland, though, is coal-seam gas.
然而目前昆士兰最热门的新产品是煤层气。
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