double ring短语¹³¹⁶²⁰⁺³ 基本例句 双轮 In the dust cleaning system of fluidized-bed boiler, a two-stage wet cleaning collector is composed of a high-speed centrifugal wet dust settling chamber and a double ring nozzle water film collector. 前言：应用沸腾炉除尘中设置湿式二级洗涤除尘器，由“高速离心分离湿式沉降室”与双环喷嘴水膜除尘器组成。 chemyq