The principlescheme aimed at one and a half circuit breaker model is presented based on basic principle and criterion of bus-bar protection.
在行波母线保护的基本原理和动作判据的基础上，给出了对应一个半开关接线方式的原理方案。
2
The design idea, principlescheme and executive result for restricting zero drift of gas sensors by means of closed loop control circuit are reported.
一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。
3
The principlescheme of geological and economical modelling in explorating ore deposit is shown and the types, content of models and steps of modelling are given.