strength-stress ratio

The yield strength, yield tensile ratio and toughness are major quality indexes of steel pipe ( board). However, it is quite difficult to determine them reasonably.

屈服强度、屈强比、韧性等是钢管（板）的主要质量指标，合理确定这些指标的数值有相当难度。

Quenching and tempering heat treatment are integrated in order to improve the mechanical properties of fasteners to meet the product requirements of tensile strength and yield ratio value.

热处理调质是为了提高紧固件的综合力学性能，满足产品规定的抗拉强度值和屈强比。

The tensile modulus and strength of the microfibrillar composites are significantly enhanced with increasing the hot stretching ratio, indicating that the microfibers have a good reinforcement on the PET/ PE composites.

复合材料的拉伸模量和拉伸强度随拉伸比增加显著增加，表明微纤化对材料具有良好的增强效果；

Results of retained Marshall Stability ( MS0) and Tensile Strength Ratio ( TSR) indicate that without additive, the moisture damage resistance of basalt asphalt mixture may not meet the specifications.

马歇尔试验残留稳定度（MS0）与冻融劈裂试验残留强度比（TSR）结果显示，无添加剂玄武岩沥青混合料的水稳定性不一定能够满足规范要求；

The tensile strength maintenance ratio of C/ LD2 is about 84%.

在500℃时C/LD2的强度保持率为84.10%。