Will we approach the world fearful and reactive, dragged into costly conflicts that strain our military and set back our standing?
我们是否要以一种恐惧和被动的姿态来应对这个世界，被卷入昂贵的冲突，消耗我们的军力，并削弱我们的地位？
A mathematical expression for compressive stress-strain curve of reactive powder concrete was established for different stee1 fiber volume fractions based on experimental analysis.
在实验分析的基础上，建立了不同钢纤维体积含量活性粉末混凝土受压应力-应变全曲线的数学表达式。
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