c45
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Finally , the formulation of both modulus of elasticity and simplified stress-stain relationship curve on C45 fine aggregate concrete were proposed .
最后，提出了C45细石混凝土弹性模量和简化三直线混凝土应力-应变关系曲线的计算公式。
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Ronaldo of Brazil arrived for C45 million .
巴西的罗纳尔多用了四百五十万。
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The following conclusions were reached : the ratio of prism compressive strength to cubic compressive strength of C45 fine aggregate concrete is0.68 .
得出了以下结论：C45细石混凝土的棱柱体抗压强度与立方体抗压强度的比值为0.68；
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Experimental results showed similar rule in damage evolvement , but different damage rate between the normal strength concrete ( C45 ) and the high strength concrete ( C70 ) .
结果表明，普通混凝土（C45）和高强混凝土（C70）在不同损伤因素协同作用下，损伤规律存在相似性，但损伤速率明显不同。