very fine极细的 voice frequency语音频率 viscosity factor粘性因数 ventricular flutter心室扑动 vocal fremitus语音震颤,语颤 vinyl formate甲酸乙烯酯 visual field(field of vision)视野(视觉的范围) vestibular function前庭功能 ventricular fusion心室融合 ventricular fluid脑室液 vitamin f(linoleic,linolenic,arachidonic acids)维生素f(亚油酸-亚麻酸-花生四烯酸之混合酸) vitreous fluorophotometry玻璃体荧光光度测定法 left leg(electrode-avf)左下肢电极avf导联