This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.
本文叙述了用频谱分析仪测量相位噪声的方法，步骤和应注意的问题。
Nuclear spectrum measurement is one of the important methods for material composition analysis and radioactivity measurements.
核能谱测量是进行物质成分分析与放射性测量的重要方法之一。
Fingerprints mean that the diagrams got by methods such as spectrum or chromatogram etc. measurement divides the characteristic diagrams or pictures of the components.
指纹图谱是指经光谱或色谱等方法测定得到的组分群体的特征图谱或者图像。
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