短語(yǔ)詞組短語(yǔ)Backward -Forward Counter 正反向計(jì)數(shù)器;加減計(jì)數(shù)器;[計(jì)]雙向計(jì)數(shù)器;翻譯forward backward counter 雙向計(jì)數(shù)器forward -backward counter [計(jì)]加減計(jì)數(shù)器;翻譯 返回 backward forward counter