... base area 底部断面面积; 底面积; 底区; 基本地区; 基区 air base area 航空基地地域; 航空基地区域 air base service area 航空基地勒务区 ...
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目的：探讨口底区肿块常见病变种类与误诊原因。
Objectives:To study the classification of common tumor in the base of oral cavity and reasons of misdiagnosis.
结论超声诊断对贲门胃底区静脉曲张的显像具有较高的应用价值。
Conclusion Ultrasonography has important clinical value in the diagnosis of cardiac part and gastric fundus varicosity.
目的：探讨完整切除中耳侧颅底区巨大肿瘤以及同期修复术腔缺损的手术途径。
Objective:To totally resect the enormous tumors of the middle ear and the lateral skull base and repair the surgical space simultaneously under well exposure of the tumors.
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