永久虚电路

Permanent Virtual Circuit / PVC

forever / always / perpetual

everlasting / perpetual / lasting / forever / permanent

(long) time / (long) duration of time

emptiness / void / abstract theory or guiding principles / empty or unoccupied / diffident or timid / false / humble or modest / (of health) weak / virtual / in vain

lightning / electricity / electric (bound form) / to get (or give) an electric shock / phone call or telegram etc / to send via telephone or telegram etc

virtual circuit / VC

electric circuit

surname Lu

road / CL:條|条[tiao2] / journey / route / line (bus etc) / sort; kind