持续声门下吸引
continuous aspiration of subglottic secretion
Continuous aspiration of secretion
Continuous aspiration of subglottic secretions
声门下恶性肿瘤
Malignant neoplasm of subglottis
声门下口
Aditus glottidis inferior
先天性声门下狭窄
Congenital subglottic stenosis
婴儿声门下血管瘤
infantile subglottic hemangioma
地下物流
underground logistic system
地下物流系统
underground logistic system