NFT 20 561:1985现行
Boric Oxide For Industrial Use - Methods Of Test
出版：Association Francaise de Normalisation
专家解读视频
85 [01/07/1985]
ISO 1915:1972 - Equivalent
ISO 1918:1972 - Equivalent
ISO 2214:1972 - Equivalent
ISO 2215:1972 - Equivalent
ISO 3119:1976 - Equivalent
ISO 3121:1976 - Equivalent
ISO 3122:1976 - Equivalent
ISO 5933:1980 - Equivalent
ISO 5932:1980 - Equivalent
