More ammonium sulphate solution is being recovered in the process of distilling oil shale.
在提炼
页岩的过程中回收的硫酸铵液比过去多
。
页岩More ammonium sulphate solution is being recovered in the process of distilling oil shale.
在提炼页岩的过程中回收的硫酸铵液比过去多。
Resinite is a rich n1aceral in Teriary humic coal,boghead-cannel coal and oil shale fromHuangxian Coalfield.
田第三
腐殖、藻
、页岩显微组分富含树脂体。
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