求翻译：比模量，模量与密度之比，可用于衡量单位重量的材料对底板 floor弹性模量的贡献，高比模量是开发新型底板 floor材料的重要依据之一是什么意思？

Than the modulus, the modulus and the density ratio can be used to measure the unit weight of the material contribution to the the backplane floor modulus of elasticity, high specific modulus is one of the important basis for the development of new the backplane floor materials

More than the volume, the volume and density of one unit can be used to measure the weight of the backplane floor material elastic modulus, and the contribution amount is higher than the development of the new floor floor materials one of the important bases on which

Compared to module, module and the density ratio of, available in weight unit weight material to ledger wall floor elasticity coefficient contribution, compared to the module is high one of development new ledger wall floor material important bases

Than the modulus, modulus and density, can be used to measure the modulus of elasticity of materials on the bottom floor of the contribution per unit of weight, high specific modulus is one of the important basis for the development of new floor floor materials

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