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1·Presents the theoretical model of pressure drop for flexible duct.

介绍了柔性风管压力损失的理论模型。

2·On the basis of the comparison of the advantage and disadvantage of the rigid and flexible ventilation duct, the choice of large diameter flexible duct is proposed.

综合考虑刚性和柔性风管的优缺点，选择大直径柔性风管进行通风。

3·Fresh Co. is a company specialized in the production of flexible duct, having several European and non-European certifications that attest the quality of its products.

是一家专业生产弹性输送管，并拥有多个欧洲和非欧洲产品质量认证证书的公司。

4·Simple Wulstumlage joint technology has been used in the similar products. GT flexible duct connector use four layers to join the Wulstumlage in its production process.

简单的凸缘卷边接合已被应用于类似的产品，GT避震口在生产过程中用四层结构进行凸缘卷边接合处理。

5·Flexible hose duct tubing. Duct curvature is adjustable.

可伸缩水龙带。可调节管道曲度。

6·Endoscopic stent placement: If the tumor is blocking the bile duct, surgery may be done to put in a stent (a thin, flexible tube) to drain bile that has built up in the area.

内视镜支架置入术：如果肿瘤阻塞了胆管，那么就需要通过手术来植入一个支架(细且灵活的管状物)来使该阻塞区域集聚胆汁排出。

7·For intravascular laser irradiation on blood (ILIB), we design a kind of intravenous laser-inject needle composed of fiber-duct, duct stand, flexible tube and laser coupling head.

为研制用于激光血管内照射治疗的一次性静脉导光针。我们设计了由导光光纤、针管、针管座、软管和耦合头组成的的导光针。