ASTM F270-56(1968) (Invalid Record) 标准详情
- 标准号:ASTM F270-56(1968) (Invalid Record)
- 中文标题:
- 英文标题:Recommended Practice for Testing Relative Thermionic Emissive Properties of Electron Tube Materials Using a Reference Cylindrical Diode
- 标准类别:美国材料与试验协会ASTM
- 发布日期: