硬密封蝶阀双向密封和高温高压技术及撑开式全屏密封球阀高温高压技术

硬密封蝶阀双向密封和高温高压技术及撑开式全屏密封球阀高温高压技术的英文翻译

基本释义

• The Technique of Hard Sealing Butterfly Valve Two-way Sealing And High Temperature And Pressure, and The Techniques of high Temperature and pressure of palm-open full screen sealing ball valve