四极质谱计在真空技术中可用来测量分压强，从事物质成分的分析。
Quadrupole mass spectrometer can be used in measuring pressure of dividing and analysis composition of material.
高真空系统残气分析对提高电真空器件的性能、质量和寿命具有重要作用。四极质谱计与微机联用是必然的趋势。
The application of the residual gases analysis in high vacuum system is very important for improving the performances, the quality and the working life of various vacuum electronic devices.
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