Test methods for natural stone—Part 5:Determination of hardness
全国石材标准化技术委员会(SAC/TC 460)
GB/T 9966的本部分规定了天然石材硬度试验的原理、仪器设备、试验样品、试验步骤、试验结果和试验报告。本部分适用于天然石材硬度的测定。
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