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Method for determining the speed and average gradient of black-and-white aerial camera films
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STANDARD published on 20.9.1988
Designation standards: GB/T 9862-1988
Publication date standards: 20.9.1988
SKU: NS-892499
Country: Chinese technical standard
Category: Technical standards GB
Latest update: 2026-07-24 (Number of items: 2 290 214)
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