短語(yǔ)詞組短語(yǔ)push -pull machine 推拉設(shè)備complementary push -pull 互補(bǔ)推挽Push -Pull Circuits 推挽式轉(zhuǎn)換器;推挽式電路Push and Pull Media 推送和拉取方式Push To Pull 從推動(dòng)式到拉動(dòng)式;由推到拉 返回 push pull