预应力的作用使得试件有很强的变形恢复 能力，有利于震后修复。
The prestressed fabricated connection has enough displacement restoring capacity, which reduces the frame damage in earthquake and can be repaired conveniently.
方法：利用红细胞变形恢复过程，建立红细胞变形指数与红细胞膜粘度的关系。
Methods: we obtained the relationship between RBC deformation index and RBC membrane viscosity in the process of RBC deformation recovery.
水蒸气后处理法中大青杨压缩变形恢复率最低，为- 3%左右；落叶松压缩变形恢复率最高，为11.6%左右。
During the water steam treatment after compression, the recovery rate of Ussuri Poplar is -3%, the lowest one, while that of Larch is 11.6%, the highest one.
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