Evaluation relevant to the partial derivatives of the multivariable functions is often done in scientific computation, usually by means of the symbolic differentiation or the divided difference.
科学计算及其应用常常需要多变量函数的有关偏导数问题的计算，通常使用的计算方法是符号微分或差分近似。
This paper explains the characteristics of the symbolic differentiation programs system, its functions, the idea of its design, and the technique of its programming.
本文说明了符号微分程序系统的一些特征、功能、设计思想和程序设计技术。
Results: the index form of the metric diagnosis and pattern differentiation of TCM against opium abstinent syndrome has favorable effective functions for the diagnosis.
结果：阿片类戒断综合征中医辨证计量诊断指数表具有良好的诊断效能。
Completely new functions can emerge from integration, and pluralism and differentiation are inherent reasons of the system integration.
整合可以涌现出系统的全新功能，多元性和差异性是系统整合的内在动因。
These results indicate that MAPK signaling functions, at least in part, as the inducer of ameloblast differentiation.
这些结果说明MAPK信号至少部分的诱导了成釉细胞的分化。
In addition to its neuroprotective and repair functions, NGF plays important roles in proliferation, survival, migration and differentiation of the neural stem cells.
其除具备营养神经元、保护和修复受损神经等生物学效应外，对神经干细胞的增殖、存活、迁移和分化等过程也具有一定的影响。
In addition to its neuroprotective and repair functions, NGF plays important roles in proliferation, survival, migration and differentiation of the neural stem cells.
其除具备营养神经元、保护和修复受损神经等生物学效应外，对神经干细胞的增殖、存活、迁移和分化等过程也具有一定的影响。
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