搜索 - 科创

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信号的频谱和瀑布图如图所示，似乎有很多谐波分量，最奇怪的是中心频率一直在忽高忽低地振荡，且振幅也在变化，似乎没什么规律，很神奇。

1.如何将PRO/E的图形放到word文档里　　方法一：先在Pro/E中在线框模式(在绘图模式下也可以)下直接另存为*.CGM文件，然后在WORD中插入，此方法效果非常好，图像是矢量图形，所以可以任...

发这个帖子的主要原因是DOS API和WinAPI有很大不同，各版本Visual Studio之间也有很大不同，想要通过老书练习C/C++编程时有时候会碰到很棘手的找不到函数和找不到功能的情况。可以根...

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