中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 9966.3-2020
Test methods for natural stone--Part 3: Determination of water absorption, bulk density, true density and true porosity 天然石材试验方法 第3部分:吸水率、体积密度、真密度、真气孔率试验
Issued Date:2020-03-06
Implemented Date:2021-02-01
Issued by:
The Standardization Administration of the People's Republic of China