Based on plastic intensifying theory, dual-linearity material model is used to calculate stress and strain on the cross section of a torsion bar spring by FE method.
在塑性硬化强扭理论的基础上，利用双线性材料模型计算了扭杆弹簧第一次强扭过程横截面的应力和应变。
China's biggest manufacturer of packaged food posted the smallest Q1 profit growth in 3 years, due to rising raw material costs and intensifying competitions.
该家中国最大包装食物生产商﹐首季利润增长为3年最慢﹐主要因为成本上涨及竞争加剧。
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