noun
direct-current circuit; DC circuit
Technical term used in electrical engineering; refers to a circuit through which direct current flows.
この直流回路の電圧を測定してください。
Please measure the voltage of this DC circuit.
交流回路 is an alternating-current circuit, while 直流回路 is a direct-current circuit.
Compound of 直流 (direct current) and 回路 (circuit).