| 1. | Nickel and its alloy wires for electronic tube
电真空器件用镍及镍合金线 |
| 2. | Nickel and its alloy sheets and strips for electronic tube
电真空器件用镍及镍合金板和带 |
| 3. | Evr electro - vacuum relay
电真空继电器 |
| 4. | Mass spectroscopy study of residual gases in vacuum electronic devices and its storage lifetime
电真空器件残气质谱分析和贮存寿命的快速测试研究 |
| 5. | Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuumtubes
电真空器件及电光源用钨钼材料电阻率的测试方法 |
| 6. | Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuum tubes
电真空器件及电光源用钨钼材料电阻率的测试方法 |
| 7. | Chemical analysis of zirconium powder for electro - vacuum uses - the molybdenum blue photometric method for determination of silicon
电真空用锆粉化学分析方法钼蓝光度法测定硅 |
| 8. | Chemical analysis of zirconium powder for electro - vacuum uses - the molybdenum blue photometric method for determination of phosphorus
电真空用锆粉化学分析方法钼蓝光度法测定磷 |
| 9. | Chemical analysis of zirconium powder for electro - vacuum uses - the methylene blue photometric method for determination of sulphur
电真空用锆粉化学分析方法次甲基蓝光度法测定硫 |
| 10. | Chemical analysis of zirconium powder for electro - vacuum uses - the chrome azurol s photometric method for determination of aluminum
电真空用锆粉化学分析方法铬天青s光度法测定铝 |
