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无偏色,隆起,起泡或涂膜脱落;硬度降低值不低于一个铅号码。
No discoloring, swelling, blisters or film loss; Hardness reduced by one lead number maximum.
youdao
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无偏色,隆起,起泡或涂膜脱落;硬度降低值不低于一个铅号码。
No discoloring, swelling, blisters or film loss; Hardness reduced by one lead number maximum.
youdao