这个入口，一般在前臂，可以由患者自己的血管来做成或者有一个灌输的管道系统组成。
The access, usually in the forearm, can be made from the patient's own blood vessels or from a piece of implanted tubing.
心脏、血管和淋巴管互相连通，共同组成一套密闭的管道系统。
The heart, blood vessels and lymph vessels connect to form a set of closed pipe system.
工程管道与人体血管都是典型的流固耦合系统，它们的性质有很多相似之处。
Engineering pipes and human blood vessels are fluid-structure coupling systems, both of which have many similar characteristics.
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