In Figure 3, version Vb is a successor to version Va, and version Vc and Va are successors to Vroot, where the version graph begins.

在图3中，版本Vb是版本Va的后续，版本Vc和Va是Vroot的后续，Vroot是版本图的开始。

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Although using such visual programming tools as VB and VC, programmers will spend plenty of time developing a program with video playing function.

采用VC、VB等可视化编程工具，开发一个具有视频播放功能的程序也要花费程序员的大量时间。

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This paper presents a method to develop image processing system with VB and VC.

提出了一种用VB与VC混合编程开发图像处理系统的方法。

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