Background:Radical clearance of cervical lymph nodes is an effective method to treat malignant tumor of maxillofacial re......

用初速1411．6m／s，重103g钢珠致伤狗领面部。伤后观察局部组织损伤的病理特点发现：（1）颌面部高速投射伤时，局部组织损伤严重而广泛，受损伤的......