÷1.3.3断裂伸长率E L-l 1009 应变 0.1 伸长率(6) 10 Load-elongation curve for 20-cm specimen of0. 3-tex flament waith density of 1.5g/am❖ 1.3.3断裂伸长率ε 100% 0 0 • − = L L L 