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duplex station
duplex steam pump
duplex steel
duplex steelmaking
duplex system
duplex tandem compressor
duplex telegraph
duplex telegraph circuit
duplex telephone
duplex telephone wire
duplex telephony
duplex theory
duplex toggle press
duplex transmission
duplex triode
duplex tube
duplex type compressor
duplex universal joint
duplex uterus
duplex vacuum plodder
duplex wave winding
duplex way system
duplex winding
duplex wire
duplex working
duplexed system
duplexer
duplexer of coaxial line system
duplexing
duplexing assembly
duplex steam pump
duplex steel
duplex steelmaking
duplex system
duplex tandem compressor
duplex telegraph
duplex telegraph circuit
duplex telephone
duplex telephone wire
duplex telephony
duplex theory
duplex toggle press
duplex transmission
duplex triode
duplex tube
duplex type compressor
duplex universal joint
duplex uterus
duplex vacuum plodder
duplex wave winding
duplex way system
duplex winding
duplex wire
duplex working
duplexed system
duplexer
duplexer of coaxial line system
duplexing
duplexing assembly
duplex station
双工(电报)台