| 1. | Double power earth electric magnetic depth measuring and application 双源大地电磁测深及其应用 |
| 2. | Application of double power resources automatic transforming switch equipment 双电源自动切换装置的应用 |
| 3. | Research on automatic intelligent switching - over double power supply system 双电源智能自动切换系统的研究 |
| 4. | Test and application of double power automatic switching device for auxiliary fan 局部通风机双电源自动切换装置的试验与应用 |
| 5. | Application of auto - converted self - starter in double - inlet fans with double power supply 双风机双电源自动切换起动器在丰矿的应用 |
| 6. | Film - paper , film dielectric capacitors for 50 60 hz voltage doubler power supplies 50 60hz倍压电源用的薄膜纸介质和薄膜介电电容器 |
| 7. | Method of automation transforming between double two - stage auxiliary fans of double power 双电源双对旋式局部通风机自动换台的实现方法 |
| 8. | Logic of double power automatic switch equipment of bridge - breaker in 220 kv shaogang substation 韶钢变电站桥连断路器的备用电源自动投入逻辑介绍 |
| 9. | Heater can be designed into double power tubes and single power tube according to the customers request 加热器可根据用户的要求设计成双功率管和单功率管。 |
| 10. | The development of a real - time surveillance and automatic switching apparatus for use with a double power supply system 双供电系统实时监控和自动切换装置的研制 |