NBN T 52-077-1977 2500 Petroleum products - corrosiveness to copper (copper strip test)《石油产品 对铜的侵蚀作用 铜条试验》.pdf

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NBN T 52-127-1985 8125 Liquefied petroleum gases - Corrosiveness to copper - Copper strip test《液化石油气 对铜的侵蚀作用 铜条试验》.pdf

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