短语词组短语expiratory center [医]呼气中枢;呼吸中枢;翻译expiratory phase 呼气相expiratory force 呼气力量expiratory centre 呼气中枢expiratory current 呼出气流expiratory flow 呼气流速end expiratory 呼气末期的expiratory load 呼气阻力负荷expiratory muscles 呼肌 返回 expiratory