she-2Level-5angle-plot

计算机图形学_实体构造实验，典型的实体空间旋转(Computer graphics _ entity structure experiments, the typical physical space rotation)

信号频谱分析 1. 观测已知方波信号、正弦波信号的频谱 分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。 观测实时模拟信号（语音）的频谱 用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图(Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum)

配电箱正视图，用2010CAD画的，通过图形可以看出每个部分的功能(A front view of the distribution box, with 2010CAD painting, it can be seen through the pattern of each part of the function)

cadence layout中快捷键的归纳总结，希望能对大家有点用(cadence layout in summary of shortcut keys, hoping to use a bit of everyone)

for PSCAD softwear it can be very easy and coming soon challenger in this soft

超声兰姆波用于无损检测，求解其相速度频散曲线，群速度频散曲线(ultrasonic lamb wave)

社区发现最常用的画图工具netdraw 使用简单方便 里面有使用说明 及例子 直接导入里面的例子文件即可(netdraw community detection)

谐波合成法模拟脉动风载时程曲线风载仿真计算(When harmonic synthesis process simulation fluctuating wind load wind load simulation curve)

边沿提取,轮廓跟踪,对于图象处理方面有很用处 很好的(Edge extraction and contour tracking, has a very useful for image processing is very good)

电力系统两机振荡仿真分析，500kV交流线路(Two machine oscillation in power system in PSCAD.)