direct current-direct current DC-DC converter
direct-current direct-current converter
alternating current-direct current
asymmetric alternating current-direct current powe
asymmetric alternating current-direct current power supply
High Power Strong Current
HTS strong current applications
strong current generator
strong current power source
strong current technology
strong current transformer
1 000 kV ultra-high voltage direct current
3-D direct current survey
救护飞机(Airam bulances)
三维直流电法
accumulator direct current supply
activating tungsten inert-gas welding with direct current straight polarity mode
alternating and direct current desalting
alternating current AC-direct current DC-AC
alternating current to direct current