密苏里州埃迪纳市水
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2025 FROSIO 国内培
高效便捷的油漆涂装
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攀艇涂装:根据瑞典标准,喷射除锈等级Sa2 1/2级,写成Sa2.5完全不正确,但是大多数业内同仁都讲SA 2.5 (2023-03-24 00:02)
jun541888:规范的说法 Sa2 1/2级 , 习惯性的说法 sa2.5 (2023-03-24 08:45)
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龙的传人:个别人学问出偏差了,1/2是否等于0.5 (2023-03-26 00:19)
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