MODBUS-读从机PLC

或许大家都设计过数据库,也为表定义过主键,今天我想阐述的是,应该如何正确的设计一个主键,在以往的一些资料中,都没有提及到主键设计的原则.我为此总结了一下: -you might have designed the database, as well as table-defined primary key, and today I would like to explain is that How should correct the design of a primary key, in the past some of the information. no mention of the primary key design principle. I summarize this for a moment :

Payroll Management system

基于QT制作的图像处理软件，可对图像进行二值化，均值滤波等操作(The image processing software based on QT can binarize and filter the image)

C语言课件，请放心下载使用，绝对的可靠，希望以后可以经常的共享东东(C language courseware, please be assured to download and use, absolutely reliable, hope that in the future can often share the East.)

编写语法分析程序，实现对算术表达式的语法分析。要求所分析算数表达式由如下的文法产生： E->E+T|E-T|T T->T*F|T/F|F F->id|(E)|num-Write parser to achieve parsing of arithmetic expressions. Requirements analysis arithmetic expressions generated by the following grammar: E-> E+ T | ET | T T-> T* F | T/F | F F-> id | (E) | num

主要是建立考虑温度场与立场耦合下的直齿轮动力学模型。通过龙格库塔法求解，得出一系列的动态特性。(The dynamic model of spur gear is mainly established considering the coupling of temperature field and position. A series of dynamic characteristics are obtained by using the runge-kutta method.)

说明：  运用KMV模型来计算债券违约概率matlab程序(Program for calculating default probability)

MAPX中如何控制缩放度-Connection control zoom degrees

说明：  tensorflow框架下利用一维卷积神经网络对一维数据的分类(Classification of one dimensional convolution neural network)

说明：  在细化选带频谱分析中,复调制细化方法(ZFFT)和线性调频Z变换方法(Ch irp-Z变换)是常用的两种方法。对于发生严重干涉现象的密集多频率谐波成分,ZFFT通过增大细化倍数后重采样,把干涉的各频率成分分离后进行校正可获得高精度的信号参数。(In the frequency spectrum analysis of refined band selection, ZFFT and Chirp-Z transform are two commonly used methods. For the dense multi frequency harmonic components with serious interference, ZFFT can obtain high-precision signal parameters by increasing the thinning multiple and resampling, separating the frequency components of interference and correcting them.)