内质网是每个活细胞中的一种管状结构。
The endoplasmic reticulum is a tubular structure which is every living cell.
碳纳米管是由比人的头发细千倍的石墨板卷曲成的管状结构。
Carbon nanotubes are rolled-up sheets of graphite thousands of times thinner than a human hair.
整个反应通道是由18个发热组件固定在一个框架上而形成的管状结构。
The process channel is a tube construction with 18 heat-generating assemblies fastened in a frame.
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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