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在双向应力状态下，沿正应变方向更易磁化。
Under biaxial stress state, magnetization is more easily achieved along the direction of positive strain.
波形钢腹板的纵向正应变值比混凝土顶板、底板小得多，数值上接近于零。
The strain in lengthwise direction of the corrugated steel web is close to zero, much smaller than that of the concrete plate.
金属钼是正应变速率敏感性材料，即流变应力随着变形速率的增加而增大。
Molybdenum is strain rate sensitive material, that is, flow stress increases with increasing strain rate.
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