With increasing reaction time, the cross linking reaction proceeded from the surface to core gradually to give a gelatin material with cross-linking degree gradient across the section.
研究发现，随着交联时间的延长，交联反应从明胶材料的表面至内部逐步进行，由此可获得交联度呈梯度变化的明胶材料。
FITLINK is one of main programs of NDFMPS that is core nuclear design and fuel management program system, and is a treatment program of cross section parameter of fuel assembly.
FITLINK是NDFMPS堆芯核设计和燃料管理程序系统的主要程序之一，是一个组件截面参数处理程序。
Under shock load conditions the peak load can exceed the ultimate bending strength of the core material and fracture occurs, usually at the most highly stressed cross section area.
在冲击负荷下，最大负荷超过了轧辊芯部材料所能承受的最大抗弯曲负荷，发生截面断裂。断裂一般产生于负荷应力为最大的截面。
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