-
2381_code
iOS编程教程,最好用的编程文档 电子书 ebook(ios tutorial)
- 2014-04-19 04:48:19下载
- 积分:1
-
4A486FBBd01
Spatialite helper document that describes steps for developement
- 2009-10-09 18:47:29下载
- 积分:1
-
Radar-Principle_3_DingLuFei
雷达原理(第三版)丁鹭飞,雷达研究领域经典的基础类教材。文件包括各章的PPT以及PDF格式的电子全书。方便快速查阅和仔细研读相关知识。(The book, Radar Principles (3rd edition) by Ding Lufei, is a classical fundamental teaching material in the field of Radar research. The package includes PPT file of each chapter and the detailed e-book in pdf-format, which is very convnient for fast looking for or close reading up related knowledge.)
- 2016-05-11 10:35:48下载
- 积分:1
-
R数据可视化手册
说明: 本书提供了快速绘制高质量图形的150多种技巧,每个技巧用来解决一个特定的绘图需求。读者可以通过目录快速定位到自己遇到的问题,查询相应的解决方案。(This book provides more than 150 techniques for quickly drawing high quality graphics, each of which addresses a specific drawing requirement. Readers can quickly locate their own problems through the directory, query the corresponding solution.)
- 2020-06-25 16:00:02下载
- 积分:1
-
dma
This pdf descripes DMA
- 2017-03-02 05:22:50下载
- 积分:1
-
1947.Roswell.UFO.crash.related.news.section
1947年罗斯威尔飞碟坠毁事件相关报道
内容根据个人自述和会谈记录的提供者
Matilda O Donnell MacElroy
(马蒂尔达·欧’丹奈尔·马克艾罗伊)
(英文)编辑整理
Lawrence R. Spencer
(劳伦斯·斯宾塞)
主体部分内容摘录、翻译、编辑
一个中国人
第 2(1947 Roswell UFO crash reports related to the contents of records under the Personal Statement and talks provider Matilda O' Donnell MacElroy (martir Daou ' 丹奈尔马克Yiluo Yi) (English) edited by Lawrence R. Spencer (Lawrence Spencer) of the main part of the extract, translation, editing a Chinese 2)
- 2010-10-17 22:13:25下载
- 积分:1
-
NURBS110707
高速切削加工技术是一种先进的制造技术,具有强大的生命力和广阔的应
用前景,已成为切削加工的主流。数控插补技术是数控系统实现轨迹运动控制
的基础,插补运算是CNC系统软件实现运动控制的核心模块,插补算法的优劣
将直接影响到CNC系统的性能。因此,实现一种高精度和高速度的插补方法是
插补的关键所在。
本文在分析传统基准脉冲插补、数据采样插补的算法的基础上,着重研究
了三次NURBS曲线实时插补技术,针对部分算法的不完整或效率低,提出了
一种简单快捷的插补算法。采用NURBS曲线的矩阵表达式,将整个插补过程
分解为插补预处理和实时插补。在插补预处理中完成了大量的计算,预处理的
计算结果直接应用于实时插补,使插补算法满足了NURBS曲线插补的实时性
要求,再辅以必要的轮廓误差控制,实现了加工速度自适应于加工路径的
NURBS曲线直接插补。
本文讨论的插补算法采用C++语言实现,并在VC++6.0的编程环境中实现
了插补算法的计算机仿真,验证了算法的正确性和可行性。(The high speed cutting is one of advanced manufacture technique,which has the powerful vitality and the broad application,and already became the mainstream of machining.The interpolation technology of NC is the foundation of path s control in the CNC system,and the interpolation operation is the core module of
CNC system software,which comes the motion control true.The interpolation
algorithm,whose function is good or bad,directly influences the performance of CNC system.So,a kind of interpolation method with the high accuracy and high speed is the key of interpolation.
Based on analyzing the traditional pulse interpolation and data sampling
interpolation,this paper emphasizes on the NURBS curve real-time interpolation
technology.In view of the partial algorithms which is incomplete and the low efficiency,this paper propose a simple and quick interpolation algorithm.Using the
matrix representation of NURBS curve,the whole interpolation process is divided into appropriate pretreat)
- 2011-07-07 11:46:17下载
- 积分:1
-
资料
关于Python的一些资料,帮助快速学习Python(The Guide of Python Quickly)
- 2020-06-17 08:40:02下载
- 积分:1
-
Rsoft教程
用于r soft 初学者的学习资料,本资料包含rsoft软件基本的功能区介绍和简单实例讲解(Learning materials for r soft is a beginner)
- 2017-12-15 23:06:46下载
- 积分:1
-
wxPythonInAction
wxPythonInAction一书及其源代码,内容详尽(The book of wxPythonInAction,with its original codes,being very well detailed)
- 2021-01-28 23:58:35下载
- 积分:1