材料在断裂点的强度（通用拉伸强度）与其密度之比，用厘米（米2 /秒2 ）表示。 比模量 比模量(英文specific modulus)是单位密度的弹性模量，是一种材料性质。又称劲度-质量比或比劲度。
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specific modulus of composite 复合材料比模量
specific young's modulus 比杨氏模量
specific flexural modulus 比挠曲模量
The longitudinal tensile specific modulus has significant variation between the five trees.
纵向弹性比模量的株间变异显著。
参考来源 - 杉木、马尾松细观力学性能及热处理材性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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In addition, they have a 17% higher specific modulus than current high strength aluminum alloys.
此外它们的比弹性模量也比现有高强度铝合金高17%。
The acoustical properties and specific heat of sample at low temperatures were studied, and the temperature dependences of modulus, sound attenuation and specific heat were obtained.
对其低温的声学和比热容性质进行了研究，得到了样品模量和声衰减以及随温度变化的规律。
Given the incompressibility of water, a relation between specific elastic storage, compressibility modulus and deformation modulus was inferred by applying current related formulas.
在假定水不可压缩的情况下，利用已有的相关公式推导了单位弹性释水系数与土层压缩模量、变形模量之间的关系。
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