The reference 197A signifies that the substance under examination is intimately in contact with an internal reflection element for attenuated total reflectance (ATR) analysis.
提到意味着该待检物质紧密地接触用于衰减全反射（ATR）分析的内反射元件。
Optimized selection is taken in noise monitoring of substance element analysis. Optimized selection method is convenient and quick.
物元分析进行噪声监测点位的优化布点，优化方法简单快捷。
Conclusion verification, which shows the feasibility of the application of substance element analysis in optimized selection of noise monitoring points.
物元分析进行噪声监测点位的优化布点，优化方法简单快捷。
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