字典網>> 英漢字典>> D開頭詞條>>downward ventilation的意思 漢英字典downward ventilation中文翻譯：【醫】 向下通風(出口低於進口)字典網 相關詞條：downward appraisals downward adjustment downward compatibility downwardmodulation downward multiplexing downward call downward reference downwards downward-compatibility downward