this article analyses two kinds of polymorphism: polymorphism in compiling and polymorphism in running. it argues the two kinds of polymorphism through function overloading and virtual function and points out that virtual function is the crucial technology of realizing dynamic binding.

in this paper, the structure and performance of hardware is described, such as a general analog measure and control module, a general switch measure and control module, a general pulse measure and control module, and a virtual function generator.

本文在分析电子信息类实验教学内容基础上，设计了各虚拟仪器的外围硬件电路，如：通用模拟量测控模块、通用开关量测控模块、通用脉冲量测控模块、虚拟函数发生器。

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the system is composed of a general analog measure and control module, a general switch measure and control module, a general pulse measure and control module, a virtual function generator, a virtual meter of frequency, cycle and phase.

该系统主要由通用模拟量测控模块，通用开关量测控模块，通用脉冲量测控模块，虚拟函数发生器，频率、周期、相位测量仪五大模块组成。

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in a base class, abstract class is defined by declaring pure virtual function, a derived class must define all inherited pure virtual functions of its base classes to be concrete.

在基类中可以通过将虚函数声明为纯虚函数的手段来定义抽象类，强制派生类在自己的类定义中实现虚函数的具体功能。

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we also creatively added the virtual function of practical training in this campus roaming network system. it enriched the functions within this system, placed stress on practicality. 6.

在本系中还创新性地在漫游校园系统中加入了虚拟实训的教育实训功能，丰富了漫游系的功能，增加了漫游系统的实用性。

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the reason for having the class name as a template parameter is so atl can do the second tricky thing, compile-time virtual function calls.

这就是为什么类名可以像一个模板参数那样使用，也正是由于这样的特性，ATL就有了第二件狡猾的设计，编译时虚函数调用。

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when a virtual function is called through a reference or pointer, the compiler generates code to decide at run time which function to call.

当虚函数通过引用或者指针调用时，编译器生成代码来决定在运行期调用哪个函数。

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this paper provides a design procedure of virtual function signal generator based on labwindows/ cvi, including system hardware configuration and software design.

介绍一种基于虚拟仪器软件开发平台LabWindows/CVI的虚拟函数信号发生器的设计过程，包括硬件组成和软件设计。

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the most important part of the client or server code is the virtual function notifyreceivedpackage, as described below

客户端或服务器端最重要的部分是虚函数NotifyReceivedPackage，定义如下

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the experiment has proven that the signal performance generated by virtual function signal generator surpasses ordinary traditional instrument.

实验表明，所设计的虚拟函数信号发生器输出信号性能优于普通传统信号源。

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this paper introduces the technology to implement virtual function mechanism in c++ compiler, whose target language is c.

因此介绍了在以C为目标语言的C＋＋编译系统中，实现用于支持多态性的虚函数机制的方法。

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correctly recognizing the virtual function of constitution

正确认识宪法的实质功能

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the virtual function of law generally focuses on regulating the exertion of rights and power.

法律的主要价值在于规范和控制权利或权力的行使。

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what is a pure virtual function?

什么是纯虚函数？

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design of virtual function signal generator based on labwindows/ cvi

基于LabWindows/CVI的虚拟函数信号发生器的设计

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study and exploitation on virtual function record system utilizing pci data acquisition card

基于PCI数据采集卡的虚拟函数记录系统的研究及开发

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this is a virtual function that each derived class must implement.

这是一个虚拟函数，每个派生类必须执行。

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discussion on polymorphism and virtual function in c++ language

试谈C++的多态性和虚函数

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virtual function is the method to realize dynamic polymorphism.

虚函数是实现动态多态性的方法。

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the application of virtual function in c++ programming language

C++中虚函数的应用

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through extracting the functional requirements from the automotive electronics virtual function bus specification, the overall design of vfb-designer and the functional partitioning of the modules are completed. 3.

从汽车电子虚拟功能总线规范中提取功能需求，完成虚拟功能总线设计器的整体设计及各模块的功能划分。

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