1)principle of balayage,扫除原理2)Descaling principle,除鳞原理3)dehumidification principle,除湿原理4)derusting principle,除锈原理5)Deaeration principle,除氧原理6)principle of dedusting,除尘原理
用法和例句
This article is to introduce the normal situation,derusting principle, economic benefit, the problems in application and the ways to solve them.