electric spark machining電火花加工;放電加工;電火花切削
electric spark machine tool電火花加工機(jī)床
resonant electric spark therapy共鳴電火花療法
electric spark ignitor電火花發(fā)火機(jī)
electric spark deposition電火花強(qiáng)化
electric spark drill電火花鉆井
Electric spark line電火花線切割
electric spark ignition電火花點(diǎn)火