strength-weight ratio

With increase of the mass ratio of drug, tensile strength and break elongation of the membrane decreased from 28.4 MPa to 20.2 MPa and from 38.6% to 4.4% respectively.

随着膜中药物含量的增加，药物膜的拉伸强度，断裂伸长率均下降，分别从284MPa降至202MPa，386%降至44%。

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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；

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The addition of polypropylene fiber decreases the shrinkage ratio of mortar and increases its tensile strength, crack energy, and the max strain, i.e. its toughness rises and brittleness falls.

聚丙烯纤维使水泥砂浆收缩率降低，抗折强度／抗压强度提高，最大变形量与断裂能增大，即使砂浆韧性提高、脆性降低。

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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。

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The pipeline steel with strain-based design is usually characterized by high initial work hardening rate, good ductility, and low yield stress to tensile strength ratio.

抗大变形管线钢就是基于应变设计的方法得到的具有连续屈服、较低的屈强比、较高的加工硬化指数以及均匀塑性变形延伸率等特性的管线钢。

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