a1s2d3f4 发表于 2020-9-9 16:09:30

求 ASTM F2299-2003 (R2017) 英文原版

求 ASTM F2299-2003 (R2017) Standard Test Method for Determining the InitialEfficiency of Materials Used in Medical Face Masks to Penetration byParticulates Using Latex Spheres 英文原版

lotus999 发表于 2020-9-9 16:09:31

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a1s2d3f4 发表于 2020-9-14 11:59:27


求 ASTM F2299-2003 (R2017) Standard Test Method for Determining the InitialEfficiency of Materials Used in Medical Face Masks to Penetration byParticulates Using Latex Spheres 英文原版
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