Methods Clinical data of 36 patients with large goiter complicated by tracheomalacia at Xijing Hospital between 1992 and 2004 were retrospectively reviewed.
方法回顾性分析1992 - 2004年本院收治的36例巨大甲状腺肿合并气管软化的临床资料。
SETTING and MATERIALS:Research was carried out in the Department of Oral Biolo gy, and Department of Nuclear Medicine of Xijing Hospital, Fourth Military Medical University.
地点和材料：实验地点在第四军医大学口腔生物学教研室和西京医院核医学科。
The essay classifies the complete content of science and technology history in Xijing Zaji as well as analyzes and discusses the account of machinery and physics in the work.
本文将《西京杂记》中科技史的全部内容按照科技史的观点进行了分类，并进一步对有关机械、物理的部分内容进行了分析、探讨。
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