direct current-direct current DC-DC converter
direct or direct or held covered
direct teemingtop pouring Direct tempering
direct-current direct-current converter
’Direct Through’of B type
1 000 kV ultra-high voltage direct current
1 kV cables of direct buria
4丁酸苯酯
1kV直埋电缆
累加器
储能电路
存储器
蓄电池
110kV direct step-down rectifying equipment
135 MW direct air cooling unit
351 alternating and direct square-waves argon arc welding machine
351 alternating and direct square-waves argon are
3-D direct current survey
救护飞机(Airam bulances)
三维直流电法
4 stages of direct air-cooling development
4100 direct injection diesel engine