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EXCEL在化工计算中的应用文章集锦[1]Excel的方程求解功能及其化学化工应用Excel电子表格在化工计算中的应用Excel电子表格在精馏计算中的应用-Excel in chemical engineering calculation of magazine articles [1] Excel functions and solving equations of Chemical Science Excel spreadsheet application in chemical calculation of Excel in the calculation of distillation should with

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IP电话的设计与实现.rar 本文从VoIP相关知识入手，介绍了IP电话的软硬件结构设计及实现方案，并描述了IP电话基于SIP的呼叫流程，并通过设计杂项的方式详细描述了系统中的几个关键点。内容仅供大家参考，更详细内容可参见源代码，源代码是最好的老师。-IP Phone Design and Implementation. Rar knowledge in this article from VoIP start with the introduction of the IP phone software and hardware design and realize the structure of the program, and describes the IP phone based on SIP call flow, and through the design of miscellaneous manner described in detail the system several key points. Content for your reference, more details can be found in the source code, source code is the best teacher.

电子商城源代码,包含项目工程文件! 数据库建表语句 具体功能包括电子购物车,在线购物!-source code projects include documents! Database Table phrases specific functions including e-Cart, online shopping!

欢迎使用“PLC串口通信调试” 本软件主要用于PLC(或单片机)与计算机的串口通信调试。软件根据目前PLC常用的多种串行通信协议的特点设计，数据的输入、组织和显示方式灵活多样，便于使用和观察调试。 在编制计算机与PLC的串口通信程序时，由于计算机和可编程设备双方均需编制通信程序，调试时往往不知道是哪一方的程序出了问题。可以使用本软件调试PLC一侧的程序，调试正确后再调试计算机侧的程序。本软件为PLC串口通信程序的调试提供了便利。-Welcome to "PLC serial communications debugging" This software mainly used for PLC (or single-chip) and the computer s serial communication debugging. According to the current PLC software for a variety of common characteristics of serial communication protocol design, data input, organize, and display flexible, easy-to-use debugging and observation. In the preparation of the computer s serial communication with the PLC program, computers and programmable devices as a result of both procedures require the preparation of communication, debugging often do not know which side the procedure is a problem. Can use the software side of the PLC program debugging, testing the right side after the debugging of computer procedures. The software for the PLC seria

ADP6人机界面的系统控制读写区 介绍如何定义人机界面的系统用控制暂存区和状态应答暂存区 (其相对于PLC的缓存器地址)，如此PWS将可与各厂牌PLC作双向讯息沟通与相互控制。-ADP6 human-machine interface system control areas how to read and write the definition of human-machine interface systems controlled temporary storage area and the state response temporary area (relative to its PLC-buffer address), so PWS will be able to brand with the PLC two-way message communication and mutual control.

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Keil C51 的使用说明,详尽介绍了Keil C51 的操作.-Keil C51 use, the details of the operation Keil C51.