The increment ratios of fracture energy,ductile index and ductility of the steel fiber reinforced high strength concrete .
钢纤维高强混凝土断裂能增益比、作用力功增益比以及延性指数随着钢纤维体积率的增加而线性增加,随着切口深度的增加而降低;外力功对断裂能的大小起较大作用。
The thesis analyzes the significance of the study on the measurement of urban sprawl and systematically concludes several important measurements of it(such as Fractal Measurement, Aesthetic Measurement, Accessibility, Sprawl Indices), with brief comments on them.
系统总结了国外城市蔓延的几种主要度量方法:分形维度、美学程度、接近度测量法和蔓延指数法。
