目的探讨高浓度氧对新生鼠肺组织血管内皮生长因子(VEGF)蛋白表达及肺血管内皮细胞超微结构影响的动态变化规律。
Objective: To explore the dynamic changes of the expression of VEGF protein in the lung and ultrastructure of pulmonary vascular endothelial cell in neonatal rats with hyperoxia.
通过对模型动态的分析，我们得到了平衡增长路径上增长率以及税率值的数学表达式。
Through the analysis of our model, we find the formula oftax rate and growth rate on the balance growth path.
通过运用VB中若干内部函数的文本框，对在程序运行过程中动态地输入函数表达式，并求得函数值和梯度的可行性进行了探讨。
The article discusses how to use some inner function and textbox about VB to dynamic input expression of functions when running program, finally getting the result of function and grades.
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