当材料的应力应变关系为弱硬化型时，应力比与应变增量比关系为两段斜率不同的直线；
When the stree strain relationship is the weak hardening, the relationship between stress ratio and strain incremental ratio shows the straight line with two different slopes.
为了应用试验结果，根据翼段模型试验确定的平尾升力曲线斜率可能要作些修正。
The tail lift curve slope as determined from the panel model may require adjustment in order to apply the test results.
其粒度分布的双对数曲线为多段折线，不同斜率的折线段对应不同的分形维。
The double logarithmic curves of particle number and particle size are folded lines, and each linear section in the curve corresponds to different fractal dimension.
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