This paper briefly depicts the process, technical point and development method of air duct systems design.

本文简述空调风管系统设计的过程、技术要点及开发方法。

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It is said that the disease is caused by abnormal development on endolymphatic duct in early embryonic stage, and the principal inducement is infectious factor.

认为该病为胚胎发育性疾病，其发生与胚胎早期内淋巴管发育障碍有关，感染是其主要诱因。

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Acute cholangitis of severe type (ACST) is critical and the development is rapid, to relieve bile duct obstruction and open drainage quickly and effectively are still the most basic principles.

重症急性胆管炎(ACST)病情危重、进展迅速，及时、快速且有效地解除胆管梗阻、通畅引流仍然是最基本的处理原则。

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