短語詞組短語fiber reinforcement aspect ratio 纖維增強體長徑比relative minimal reinforcement volume ratio 界限配筋率longitudinal reinforcement ratio 縱筋率critical reinforcement ratio 界限配筋率strengthened reinforcement ratio 界限配筋率tension reinforcement ratio 配筋率steel reinforcement ratio 配筋率optimum reinforcement ratio 最優(yōu)配筋率 返回 reinforcement ratio