hollow cone meaning in English

空心光锥
空心圆锥体

The spray area of this series of nozzle is formed by one or several continuous hollow cone - shape rings of concentric circles . the nozzle aperture will not be blocked up . it is mainly used for flue elimination , cooling of steel - making convertor . and redistributing in all kinds of washing towers . it also can be used for jar cleaning . used in cooling tower and fire apparatus
该系列喷嘴的喷雾区域是由一个或几个连续的同心圆空心锥环组合而成，不易阻塞，主要用于炼钢转炉烟道除尘降温及各种洗涤塔里的再分布，也可用于清洗罐、冷却塔、消防设备中。