发布时间:2025-01-28 11:36:50
黄铜时间长了容易氧化,所以就会失去原有的光亮。师兄可以用一块干净的软的毛巾蘸着香油擦拭一下。如果要彻底的翻新,那只有返回到原来的生产厂家,以旧翻新。
请教资深人士通常说的c6140车床加工费15元47小时是指工人工资还是包含所有的费用
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