第一个人造心脏装置研发于二十世纪五六十年代，这颗心脏通过一条软管连接到体外的另一部机器上。

The first devices, developed in the 1950s and 1960s, were large machines placed on trolleys next to the patient and attached by tubes.

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体外无粘性筋是指安置在原始混凝土结构外部，只能通过锚固和变向装置连接至结构上的钢筋。

P an external non-bonded tendon is a tendon situated outside the original concrete section and is connected to the structure by anchorages and deviators only.

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标准尺寸的孔与气动执行机构连接。中间为一伸出体外的方身，直接与气动执行机构内八角相连。

Hole of nominal size connects with pneumatic operation organ, Threr is a square body protruding out which directly connects with the internal octagon of pneumatic operation organ.

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It's this tube-like structure, which is made of many, many epithelial cells all directly adjacent to each other, is what separates the outside world from our internal bodies.

这些管状结构,也是由许许多多上皮细胞,互相连接而成的,它使体内和体外,区分开来

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