可用于电真空容器制造、真空焊接、印刷、吸塑、制冷设备维修及仪器仪表设备配套和实验室等。
Can be used for vacuum packaging, manufacture, vacuum welding, printing, plastic, refrigeration equipment maintenance and instrumentation and laboratory and other ancillary equipment.
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;
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