| 1. | Detail specification for 3 - pole 10a relay sockets
三极10a继电器插座的详细规范 |
| 2. | Electrical communication engineering ; three pole plug
电信技术.三极插头 |
| 3. | Measuring methods for thyristor . reverse conducting triode thyristor
晶闸管测试方法逆导三极晶闸管 |
| 4. | Electric communication engineering ; three - pole plug , 5 . 75 mm diameter
电信技术.直径为5 . 75mm的三极插头 |
| 5. | Switchgear for aircraft . triple pole push - button operated circuit - breaker
飞机开关装置.三极按钮断路开关 |
| 6. | 2 very very few : three , four poles
2极数：三极四极 |
| 7. | Three pole knife switch
三极闸刀开关 |
| 8. | Three - pole knife switch
三极闸刀开关 |
| 9. | A . c . high - voltage switchgear and control gear . three - pole circuit - breakers . characteristics
交流电用高压设备.三极断路器.特性 |
| 10. | Triple pole contactor
三极接触器 |
