They found out what happened after checking footage from a closed-circuit televisioncamera they had installed at their house after their car was repeatedly bumped by other vehicles.
Terminal checking the circuit and control dial protecting setting is normal or not.
定期检查电路及控制仪表的各种保护设置功能是否正常。
3
Building the transition relation of sequential logic circuit is one of the key technologies for applying model checking method to verify the sequential logic circuit.