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说明：  水下扩频系统研究，本系统采用直接扩频序列方式，在有多径水声信道和无多径的水声信道进行研究比较(Research on underwater spread spectrum system, this system adopts direct spread spectrum sequence mode, and carries on the research comparison in the multi-path underwater acoustic channel and the non-multi-path underwater acoustic channel)

绝地投诉sssssssss少时诵诗书所所所所所所所所所所所所所所(jueditoushisssssssss)

STM32F4 使用等精度测量法测量频率(STM32F4 Measures Frequency with Equal Precision Method)

lottery exchange system

说明：  这些文件将在两用户非正交多址（NOMA）系统中实现用于信号检测的深度学习方法[1]。三个主要脚本分别是生成训练数据、训练神经网络和生成测试结果。该神经网络用于相位衰落的静态标量信道，用于NOMA系统中同时检测2个用户的单个子载波上的传输符号。考虑并测试了两种情况：一种是导频符号数目较少，另一种是循环前缀长度较短。在这两种情况下，深度学习方法都比传统的信道估计方法具有更强的鲁棒性。(These files are to implement the deep learning method for signal detection in a two-user non-orthogonal multiple access (NOMA) system [1]. The 3 main scripts are to generate training data, to train the neural network and to produce testing results, respectively. The neural network is trained for a static scalar channel with phase fading and is used to detect transmitted symbols on a single subcarrier for 2 users simultaneously in a NOMA system. Two scenarios are considered and tested: one is with fewer number of pilot symbols and the other is with shorter length of cyclic prefix. The deep learning method is shown to be more robust than conventional channel estimation methods in both cases.)

C#编写代码控制电脑机箱蜂鸣器发声，还可显示频率及声响时间。整体较简单的声音控制实例，适合初学者。

C++经典的好书，英文原版的，chm电子文档方便阅读。(C++ Classic book, the English original, chm easy to read electronic documents.)

此文件为凯威特网壳结构ANSYS建模的APDL语言，可以完成各类凯威特网壳结构的参数化建模(This document is APDL language of modeling ANSYS of kaiweite shell structure, which can complete the parametric modeling of various kinds of kaiweite shell structure)

testing upload of 2 length must be higher

一个关于物性计算的软件，能够计算出各种制冷剂的物性，而且有DLL文件供VB和Matlab调用，使用及其方便。(A calculation on the physical properties of the software can calculate various physical properties of refrigerants, and have DLL files for VB and Matlab call, use and convenience.)