发布时间:2025-01-31 20:29:31
一般不锈钢的餐具较多,还有白铁,都是白色金属,不锈钢没有磁性,这些金属硬度都够高,要是满是划痕,我估计最少有十年
去工地学习放线怎么样 有懂的 把经验分享一下呗 我是新手 谁能给我介绍一个师傅 我会cad ug也懂一些
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