使用真空表和排气阀优化样品流速。
Vacuum gauge and valve assembly can optimize the flow of samples.
通过此种方式，所述蒸气流速可大体与压力表输出成正比。
In this way the vapor flow rate can be generally proportional to the pressure gauge output.
通过此种方式，所述蒸气流速可大体与压力表输出成正比。
In this way the vapor flow rate can be generally proportional to the pressure gauge output.
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