circuitaladj.线路的(循环的)circuitn.巡回；线路；环形；电路；回路v.巡回；绕 ... 环形circuit-noise level[电] 电路杂音位准circuit control valve流量调节活瓣circuit breaker check断路器检测circuit state message电路状态信息circuit timing diagram电路时序图circuit testing center电路测试中心circuit gap admittance电路间隙导纳circuit closing device接通装置circuit transformation电路变换circuit control device逆变器控制器