over sanding中文什么意思

砂破皮

• over:     This hat cos ...
• sand:    n. 1.沙。 2.〔 pl. 〕 ...
• sanding:    喷砂清洗; 铺砂磨; 铺沙子; 砂光 ...

例句与用法

1. The conclusion is that iron ceramics media has a lot of advantages over sand media in the fields of filter run and yield . it has good quality of little hydraulic pressure loss , longer period and capabilities of impurity
   结果表明，涂铁陶粒滤料滤池具有过滤水头损失小、运行周期长、截污能力强的优点，其过滤性能优于石英砂滤料滤池。