| 释义 |
coal seam
释义
煤层：通常足够厚以盈利开采的一层煤。
例句
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。
同义词
[地质]煤层
coal measurescoal bed
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