金融学中的理论，数学理论，能帮助我们构造金融工具，金融工具就像发动机，或者核反应堆一样，都是复杂的工具。
We have theories — mathematical theories — that lead us to devise financial structures, which are complicated devices just like engines or nuclear reactors.
本文提出了预测核反应堆压力容器钢中杂质元素(主要是磷)晶间非平衡偏析的溶质拖拽模型，并且与速率理论模型进行了对比。
In this paper, a solute drag model was proposed to predict the phosphorus inter granular segregation in reactor pressure vessel steels and compared with the rate theory model.
从理论上分析了密度锁在核反应堆非能动安全中的作用及特点，介绍了密度锁的工作原理和结构形式。
The action, work principle and characteristics of density locks used in nuclear reactor passive safety are analyzed theoretically.
从理论上分析了密度锁在核反应堆非能动安全中的作用及特点，介绍了密度锁的工作原理和结构形式。
The action, work principle and characteristics of density locks used in nuclear reactor passive safety are analyzed theoretically.
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