Home / Standards / GBT 25753.3-2011 GBT 25753.3-2011 Vacuum technology — Performance test methods for Roots vacuum pumps — Part 3: Measurement of overflow valve pressure difference 真空技术 罗茨真空泵性能测试方法 第3部分:溢流阀压差的测量 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A