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实现弧度向角度的转换，判断在第几象限。。。。。。(Realize the conversion of radian to angle and judge the quadrant)

说明：  基于MATLAB的飞机六自由度模型，可以说具有很强的实用性和普适性(The six-degree-of-freedom model of aircraft based on MATLAB can be said to have strong practicability and universality.)

说明：  维纳滤波算法，可以实现对语音信号的降噪，效果还可以(Wiener filtering algorithm, it can achieve noise reduction on speech signals)

说明：  神经肌肉电刺激信号采集与处理本科毕业设计(Neuromuscular electrical stimulation signal acquisition and processing Graduation Project)

说明：  根据舰船螺旋桨噪声一书给出的计算空泡噪声的公式，简便计算各种条件下的螺旋桨噪声级的程序(According to the formula for calculating the cavitation noise given in the book "Propeller Noise of Ships", the program for calculating the propeller noise level under various conditions is simple and convenient.)

bookman电子图书馆(bookman electronic library )

利用LABview软件的频谱分析功能实现使用FFT分析信号幅度谱和相位谱，(Analysis of Signal Amplitude Spectrum and Phase Spectrum by FFT)

该程序是利用Matlab编写，用于RVE单元。施加周期性边界可以根据源码进行学习PBC原理。(The program is written in Matlab and used in RVE unit. Periodic boundaries can be applied to learn PBC principles based on source code.)

说明：  根据储层物性及原油物性，推荐最优的提高采收率方法(According to the physical properties of reservoir and crude oil, the method of enhancing oil recovery is recommended.)

这是用MATLAB编写的tank模型代码，可以供水文相关专业学生做论文使用(This is written in MATLAB tank model code, you can water related papers for students to use)