... chemical surface attack 化学表面侵蚀 resistance to chemical attack 抗化学腐蚀能力 massive chemical attack 大规模化学攻击 ...
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YG8硬质合金经稀硝酸水溶液化学侵蚀后，表面一定深度内的粘结相钴将被化学刻蚀掉，引起表层疏松。
Cobalt phase was chemically etched to certain depth beneath the surface and porous layer was formed after YG8 cemented carbide had been soaked in aqueous solution of dilute nitric acid.
合成树脂瓦主体树脂和表面树脂都具有非常好的耐腐蚀性能，不会被雨雪侵蚀，并可长期抵御酸、碱、盐等多种化学物质的侵蚀。
Synthetic resin tile main resin and surface resin has very good corrosion resistance and will not be rain erosion, and long-term resist acid, alkali, salt and so many chemical erosion.
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