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给出了几种不同条件下四极质谱计临近上限时的特性。通过对实验结果的分析研究，提出了在不影响四极质谱计其它性能的情况下提高四极质谱计线性上限的方法。
The characteristics of the quadrupole mass spectrometer near the upper limit are given under several different conditions. Based on the analysis of experimental results, a method of increasing the linear upper limit of quadrupole mass spectrometer without affecting other performances of quadrupole mass spectrometer was proposed.