| 1. | When the secondary circuit is open, the core flux is produced by the primary current only .
当次级电路开路时，铁芯磁通量仅仅由初级电流产生。 |
| 2. | When the secondary circuit is closed, both primary and secondary currents set up a flux in the core .
当次级电路接通时，初级电流和次级电流都在铁芯内建立了一个磁通量。 |
| 3. | Retrofit of safety valve secondary circuit of boiler
锅炉安全阀二次保护回路的改造 |
| 4. | Ignition secondary circuits produce high voltagws
次级点火线圈高电压，操作注意。 |
| 5. | Specifications for design secondary circuit of hydroelectric powerplants
水力发电厂二次接线设计规范 |
| 6. | Detecting the pt secondary circuit open at the neutral of generator
发电机中性点电压互感器断线的检测方法 |
| 7. | Basic dimensions of electrical console for secondary circuit of power system
电力系统二次回路电气控制台基本尺寸 |
| 8. | Guide for the grounding of instrument transformer secondary circuits and cases
仪表用变压器次级线圈电路外壳接地指南 |
| 9. | Basic testing method for control and protection panel cabinet desk of secondary circuit of power system
电力系统二次电路用控制及继电保护屏 |
| 10. | General specification for control and protection panel cabinet desk of secondary circuit of power system
电力系统二次电路用控制及继电保护屏 |
