The principle and design of valve upstream hotplate for preventing excessive flow leakage, and the application of the valve series products are discussed.
论述了防超流量泄漏灶前阀的原理、阀门的设计及防超流量泄漏灶前阀系列产品的应用。
Upstream downstream finished products of the factory production of raw materials.
上游工厂的产品成为下游成品生产的原材料。
The derivative products meet the demand of advertisements, television media, the upstream providers and star adherents.
衍生产品来源于广告、电视传媒、产业供给主体和追星族的需求。
应用推荐