求翻译：木材由于结构、形状和树龄的差异及受自然环境的影响，其材性差别很大。如泡桐，鱼鳞云杉密度小，材质轻软、弹性模量及辐射是什么意思？

Timber due to the structure, shape and age differences and the natural environment, its wood properties vary greatly. Such as paulownia, spruce density, texture, light, soft, elastic modulus and radiation

Because of the structural wood, shape, and age of the trees and the differences between the natural environment of the impact of the material, is very different. mountainsides scales such as spruce density, small, lightweight and soft elastic modulus and radiation

The lumber as a result of the structure, the shape and the tree age difference and the natural environment influence, its material difference is been very big.If the pawlownia, the scale spruce density is small, material quality light and soft, elasticity coefficient and radiation

Because of differences in structure, shape and age of wood and from the impact of the natural environment, its properties vary greatly. Such as paulownia, Picea jezoensis density, modulus of elasticity of materials qingruan, and radiation

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