cross section biomedical illustration of route of bronchoscope inserted through nose - 細支氣管 幅插畫檔、美工圖案、卡通及圖標
digital illustration showing the structure of the bronchus and bronchial tubes. these pathways carry air into the lungs and carbon dioxide out - 細支氣管 幅插畫檔、美工圖案、卡通及圖標