"smaller " CNS Standards List| Polyethylene | Audio , | Method Test | Hatch Wedges | Information technology | Method Test | Plastics piping | Heat resistant | |
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CNS 490
2021 Edition Method of test for resistance to degradation of coarse aggregate (smaller then 37.5 mm) by abrasion and impact in the Los Angeles machine 粗粒料(37.5mm以下)洛杉磯磨損試驗法 |
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