external fin外肋externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物external cavity feedback外腔反馈external phase modulator外相位调制器external interconnection外部连接external combusion stove外燃式热风炉external secreting gland外分泌腺external capital markets外部资本市场external MIDI instrument外部MIDI设备external pudendal artery阴部外动脉external composite layer外复合层external pterygoid mucle翼外肌