adjacent track circuit的用法和样例：
- Though there is no train is occupying the overlap track circuit.
- Track circuit Trackside device used for track free/occupied determination.
- The jointless track circuit is an advanced control system which is used tocontrol the trains.
- It is a special power supply equipment designed recently for phase sensitive track circuit in AC electrified railway.
- The research results may provide some references for the design of ballast-less track and the research of adoptability of ballast-less track on joint-less track circuit.