“腐殖煤”的英语？

在煤岩的分类中,有腐殖煤和腐泥煤之分.Coal rock can be classified as humic and sapropelic coal.黄县煤田第三纪腐殖煤 、 藻烛煤、油页岩显微组分富含树脂体.Resinite is a rich n 1 aceral in Teriary humic coal, boghead - cannel coal and oil shale fromHuangxian Coalfield....