用四极质谱计来测量放电前后杂质的变化。
A quadrupole mass spectrometer is used to measure the changes in impurities before and after the discharge.
它对四极质谱计的用户如何保养仪器有重要的参考价值。
This is of worthy of a paper for user of QMS, it was shown how maintain instrument.
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.
对于在航天领域应用的四极质谱计除了对性能的要求之外，其体积和重量也是不容忽视的重要指标。
Quadrupole mass spectrometer's volume, weight and performance are the most important facts applying in space field.
该系统的通用性强，性能价格比高，原则上可与各种国内外生产的四极质谱计联用，也可以脱机作为普通微机用。
The generality is high. In principle, it can be used to combine with the quadrupole mass spectrometer made at home and abroad, and as general microcomputer itself.
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.
文中给出了四极质谱计在火箭试验及发射时的应用实例，并提出航天器泄漏监测技术的发展趋势和监测设备的方向。
A quadrupole mass spectrometer used during launch vehicle testing and launching is given, and the trend of spacecraft leak monitoring technique and equipment is raised.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
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