The characteristics of filter between no precoat and precoat were compared.

介绍江苏省内精密过滤器使用情况,对比不预涂和预涂过滤器。

Studies on heat exchanger aluminum fin precoat of air conditioner were reviewed. Six types of precoat as well as the application of hydrophilic precoat were described.

调机热交换器预涂层铝散热片研究概况，介绍6种类型预涂层散热片材料基本情况以及亲水性预涂膜散热片应用效果。提出该课题今后研究方向。