总线

总线	zǒng xiàn	computer bus
总	zǒng	general; overall / to sum up / in every case; always; invariably / anyway; after all; eventually; sooner or later / surely / (after a person's name) abbr. for 总经理 or 总编 etc
线	xiàn	variant of 线
线	xiàn	thread / string / wire / line / CL:条,股,根 / (after a number) tier (unofficial ranking of a Chinese city)