| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 12823-1991 | English | 519 |
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Days<=4
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Terms, symbols, coordinate system and functional notations for photographic density measurements
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GB/T 12823-1991
| Obsolete |
GB/T 12823-1991
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