在矿石硬度表上，它的硬度为8，这表明刀子不能割开它而它可在石英上划痕。
In the mineral table of hardness, it has a rating of 8, which means that a knife cannot cut it, and that topaz will scratch quartz.
和其他方法主要区别在于该工具使用的数据集是通过地质统计学的方法把大量的矿石硬度特性赋予到整个矿床模型中建立的。
It fundamentally differs from other methods by using as its' data set a geostatistically significant population of hardness data distributed across the mine block model.
主要用途：本机供选矿、化学、水泥、建筑材料等工业部门中破碎和细碎各种中等硬度一下的矿石和岩石之用。
Main purposes: the machine is used to break the ore and rocks whose hardness is below the middle, in the works of industrial departments such as beneficiation, chemical, cement, building materials.
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