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这种圆柱形容器是我们自行设计和制造的。
This cylindrical vessel is designed and made by ourselves.
youdao
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所采用的模型为：分子流；真空室为无限长圆柱形容器；
The following physical model used is such as free-molecular flow;
youdao
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所采用的模型为：分子流；真空室为无限长圆柱形容器；
The following physical model used is such as free-molecular flow;
youdao