我国南方地区,气候湿热,大部分属亚湿热带气候,一部分属湿热带气候,对电工产品的正常运转,确有一定影响。从我们去年对我国南方十个城市中使用的电工产品运转情况调查结果来看,金属零件生锈腐蚀比较普遍,因此,选择经济可靠的防护电镀层是设计和制造热带产品的关键问题之一。 In the southern part of our country, most of the humid and hot climates are sub-humid tropical climates, and some of them are humid and tropical climates. They do have a certain impact on the normal operation of electrical products. From our survey of the operation of electrical products used in ten cities in southern China last year, rust corrosion of metal parts is relatively common. Therefore, choosing a reliable and economical protective plating layer is one of the key issues in the design and manufacture of tropical products.