Methods Cervical heterotopic cardiac transplantation model of rat was established and pathological changes of transplanted heart were observed at different time point by he stain method.
方法建立大鼠颈部心脏移植模型，采用HE染色的方法，观察术后不同时间移植心脏的病理改变。
The results indicate that the stress-stain curve of the honeycomb cardboard will first move up to the point of the unloading value with the secondary loading.
结果表明，二次加载时，蜂窝纸板的应力—应变曲线将首先上升到预压时的卸载点。
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