电信英汉词典
- direct signal
- direct solution
- direct sound
- direct spot welding
- direct spread system
- direct start
- direct statement
- direct station selection
- direct steam cure
- direct stress
- direct stroke
- direct substitution method
- direct subtract
- direct sum
- direct sum code
- direct sum of automaton
- direct support maintenance
- direct suspension
- direct suspension system
- direct switching system
- direct symbol recognition
- direct synthesis technique
- direct synthesizer
- direct teaching
- direct teaching method
- direct telegraph circuit
- direct telephone exchange
- direct telephone service
- direct telephone telegram traffic
- direct television broadcasting
- direct telexcircuit
- direct through connection
- direct through connection filter
- direct to ground capacitance
- direct tracking
- direct transform
- direct transit
- direct transit circuit
- direct transit country
- direct transit telegram
- direct transition
- direct translator
- direct transmission
- direct transmission system
- direct trunk
- direct trunk access
- direct trunk line
- direct trunking
- direct tunneling phenomenon
- direct vent system