短語詞組短語DC Alterable 直流可調(diào)alterable design 可變設(shè)計alterable step 步進(jìn)可變alterable trough 可變槽角gain alterable 變增益digital alterable 數(shù)字可調(diào)alterable ROM 電可改寫只讀存儲器Alterable frequency 變頻;可變頻 返回 alterable