阀轴,阀杆
"Primary uses for wrot brass are for ball valve stems and balls, and iron valve stems. a forging grade of brass is used in ball valve bodies and pieces." Dynamic Analysis of a Spindle of Pilot-operated Solenoid Valve
黄铜的主要用途是球阀阀杆和球体,和铸铁阀门的阀杆。可锻黄铜可用于球阀阀体和断口部件。两级先导式电磁阀主阀芯动力学分析
Research on Seal Technology for the Spindle Oil Valve of Light Hydrocarbon Storage
轻烃总库锭子油阀密封技术研究
Study on Aeration Valve for Spindle Hole of Turbine
水轮机主轴中心孔补气装置的研究
微语录 · 个性签名
微语录 · 爱情句子
微语录 · 句子大全
微语录 · 经典语录
微语录 · 唯美句子
微语录 · 精美散文