"opacity(paper " CNS Standards List| Synchros | Safety household | Ships | Essential oils-Principles | Quantities units | 660V Multi | V Belts | Unplasticized polyvinyl | |
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CNS 14931
2018 Edition Paper and paperboard - Determination of opacity(paper backing)- Diffuse reflectance method 紙與紙板不透明度(紙張背襯)試驗法-擴散反射率法 |
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