发布时间:2025-01-19 02:58:29
925银的项链在空气中,时间长了会发生化学反应,项链表面生成AgO,所以会出现所谓的黑色。如果想要将项链恢复原来的原色,可以将项链放入食用醋中,加热一段时间,可以看到有气泡产生,之后,将项链拿出来,用清水冲洗,就可以光亮回复如初。
和窗帘店签订了订购合同交付了500定金后发现其他很多家都比他便宜很多
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