木材不是完全弹性体，其力学性质具有明显的粘弹性。
Being not a perfect elastic substance, wood behaves some viscoelastic properties in many respects.
用来描绘木材弯曲蠕变的粘弹性模型都是由一个马克思维尔体和两个开尔文体所组成的六元件模型。
The viscoelasticity model used to describe the bending creep of wood is a six element model composed of one maxwell and two kelvin systems.
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