“藻烛煤”造句

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.

• #藻烛煤