| 1. | It is always difficult to assure good insulation between the electric leads .
要保证两个电触头之间有良好的绝缘总是很困难的。 |
| 2. | Technical specification for electric contacts of rivet type
铆钉电触头技术条件 |
| 3. | Technical specification for copper - chromium electrial contact
铜铬电触头技术条件 |
| 4. | Metallographic examination of the electric contact materials
电触头材料金相检验方法 |
| 5. | Technical specification for silver - graphite electrical contacts
银石墨电触头技术条件 |
| 6. | Metallographic atlas of the electric contact materials
电触头材料金相图谱 |
| 7. | Copper - tungsten and silver - tungsten electrical contacts
铜钨及银钨电触头 |
| 8. | Test methods for essential porperty of electric contact material
电触头材料基本性能试验方法 |
| 9. | The development of silver - base contacts
银基电触头产品的发展状况 |
| 10. | Technical specification for silver - nickel , silver - iron electrical contacts
银镍银铁电触头技术条件 |
