For the purpose of the development and utilization of the argilla re sources in Huaibei, the activation of coal-argilla taken from Zhuzhuang coal mi ne was studied as representative sample.
为开发利淮北矿区岭土资源,以该区朱庄煤矿煤系岭土为代表样品进行岭土的活。
For the purpose of the development and utilization of the argilla re sources in Huaibei, the activation of coal-argilla taken from Zhuzhuang coal mi ne was studied as representative sample.
为开发利淮北矿区岭土资源,以该区朱庄煤矿煤系岭土为代表样品进行岭土的活。
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