More ammonium sulphate solution is being recovered in the process of distilling oil shale.
在提炼油页
程中回收硫酸铵液比去多了。
More ammonium sulphate solution is being recovered in the process of distilling oil shale.
在提炼油页程中回收硫酸铵液比去多了。
Resinite is a rich n1aceral in Teriary humic coal,boghead-cannel coal and oil shale fromHuangxian Coalfield.
黄县煤田第三
腐殖煤、藻烛煤、油页显微组分富含树脂体。
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