The oil shale technology mining coefficient is the pivotal parameter when the oil shale resources are converted into the oil shale technique mining resources.

油页岩技术可采系数是将油页岩资源转化为油页岩技术可采资源的关键参数。

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The oil shale technology mining coefficient is the pivotal parameter when the oil shale resources are converted into the oil shale technique mining resources.

油页岩技术可采系数是将油页岩资源转化为油页岩技术可采资源的关键参数。

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