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Standard Insuued on: 1987-06 |
Category No.: | GB | Valid Status: | superseded |
Issued Organization: | National Machinery Industry Commission | Issued Date: | 1987-06-20 |
Implemented Date: | 1987-1-2 | Abolished Date: | |
Superseded Standard.: | GB/T 7962.12-2010 Test methods of colourless optical glass—Part 12:Spectral internal transmittance |
Superseded Date: | 2011-5-1 |
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