许多数学对象，例如数集和函数集合，表现出内部结构。

Many mathematical objects, such as sets of Numbers and functions, exhibit internal structure.

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当你真正的去学习一门面向对象语言时，就会有C语言的函数学习基础去对比。

When you do learn object , you will have the base of C functional programming to go by.

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母线保护的物理对象是一个输入输出关系确定的函数对象，可用一个ANN模型去替代，或用一个ANN数学模型去逼近母线保护物理对象的输入输出之间的函数关系。

Physical object of bus protection is a function with certain relation between inputs and outputs, which can be replaced by an ANN model, i. e. can be approximated by an ANN mathematical model.

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