danbihuanbizhikongzhixitong

自己调研的关于太阳能薄膜电池的技术，制造设备，发展前景的PPT，很翔实(Their own research on thin film solar cell technology, manufacturing equipment, the development prospects of the PPT, very informative)

VB与EXCEL的交互连接，VB对EXCEL的写入，VB读出EXCEL的数值(VB and EXCEL interconnect)

这个程序可以计算给定点处的小区信号范围覆盖。-is program computes a map of visibility from a selected point on a topography. It has been written to help the search for radio relay best location. Because it considers only direct line of sight, it gives a good estimation for possible radio link for short distances only (less than 10 km), neglecting curvature of the Earth, Fresnel zone and atmospheric refraction on radio waves propagation. The program computes the relative elevation angle of the mask for each point (the angle is null or negative if the point is visible). The function needs a digital elevation model Z and associated (X,Y) vectors or matrices of coordinates (same unit as Z), position of the point (X0,Y0), the antenna height H0 (for instance 4 m), and the hypothetic antenna height Ha on each topography points (for instance 3 m). When no output argument is given, the function plots a map of the results (color map of mask angles, and blank for visible points, see example screenshot). The s

Isaac Newton Philosophiae naturalis principia mathematica

说明：  软考习题 软件设计师 历年习题 供下载 认证考试资料(Soft-test exercises)

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IAR EWARM 5.11.KEYGEN&ID.

delphi 猜数字游戏,有兴趣的可以参考学习(delphi game code)

计算机图形学 清华大学出版社 PDF格式(Computer graphics books in PDF format, Tsinghua University Press)

说明：  利用ENVI进行辐射校正代码,c#可以实现调用(use ENVI to CAL_CALIBRATION)