GB/T 9966.2-2020 代替GB/T9966.2—2001
天然石材试验方法第2部分∶干燥、水饱和、冻融循环后弯曲强度试验
Test methods for natural stone-Part 2:Determination of dry,wet and after freezing flexural strength
2021-02-01实施
2020-03-06发布