Peak area is recommend to be used as the characteristicvariable for chromatographic fingerprints.
在指纹图谱特征变量的选择方面，推荐采用色谱峰面积。
2
This dissertation studies the variable structure characteristic of load, and offers corresponding modeling methods after analyzing the reason of changing load structure.
本文研究了负荷存在的变结构特性，分析变结构的原因并提出了相应的建模方法。
3
The experiment has studied the heat transfer characteristic inside U shaped variable cross-section channels with different rib pitches, The channel is the middle part of a gas turbine blade.