principal stress trace 主应力迹线
Based on correlation coefficients and principal component analysis, fe and al were selected as the concentration normalizer for the different trace metals.
由相关系数和主成份分析，选择铁和铝作为沉积物中痕量金属浓度的均一化元素。
Based on the experimental results, the boundary stress and inside stress of the bridge pier are given and the relevant trace of the principal stress is drawn.
通过实验给出了桥墩的边界应力及内部应力，并绘出了相应的主应力迹线。
Trace interpolation plays an important role in seismic data processing. Spatial aliasing is a principal troublesome problem in seismic trace interpolation.
道间插值方法在地震资料处理中具有十分重要的作用，而地震道空间内插所面临的主要问题是空间假频。
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