plug up堵住; 塞住
plugn.塞子;插头;推销;火花塞;口嚼烟v.塞;堵;宣传;插上插头;苦干
plug-in-switching block
Plug gauges and ring gauges
plug and socket arrangement
Plugs and socket - outlets
plug and jack type connector
plug in the tape recorder.
plug-in unit for polygraph
Plug removal by reverse flow
plug-compatible peripheral
plug-in repetitive control