字典網>> 英漢字典>> S開頭詞條>>step down transformer的意思 漢英字典step down transformer中文翻譯：【醫】 降壓器英文字典字典網英文字典相關詞條：step tracking step response stepping time stepwise decomposition stepwise dissociation stepwise regression step counter step-by-step operaton stepped wheel gear step aside