二维验证

俄罗斯方块是一款风靡全球的掌上游戏机和PC机游戏，它造成的轰动与创造的经济价值可以说是游戏史上的一件大事。它由俄罗斯人阿列克谢• 帕基特诺夫发明，故得此名。俄罗斯方块的基本规则是移动、旋转和摆放游戏自动输出的各种方块，使之排列成完整的一行或多行并且消除得分。它看似简单却变化无穷，俄罗斯方块上手极其简单，但是要熟练地掌握其中的操作与摆放技巧，难度却不低。作为家喻户晓老少皆宜的大众游戏，其普及程度可以说是史上任何一款游戏都无法相比的。相信大多数人都还记得为它痴迷得茶不思饭不想的那个俄罗斯方块时代。由于俄罗斯方块具有的数学性、动态性与知名度，也经常拿来作为游戏程序设计的练习题材。(Tetris is a popular the global handheld console and PC games, it caused a sensation with the creation of economic value can be said that the game in the history of a major event. It invented by the Russians Alexey • Pajitnov, it was this name. The basic rules of Tetris moving, rotating and placing games automatically output a variety of boxes, arranged in a complete one or more lines and eliminate the score. It seems simple, but endless variations, Tetris is extremely simple to get started, but to be proficient in the operation and placed skills, the difficulty is not low. As the household ages Volkswagen games, its pervasiveness can be said that the history can not be compared to any game. I believe most people still remember it was obsessed tea does not think Rice did not want that Tetris era. Tetris has math, dynamic and well-known, often being used as the theme of game programming practice.)

说明：  读取多个seg2文件数据合并后写入segy格式文件(Read data from multiple seg2 files and write it to segy format file after merging)

使用内点法求解线性规划最优解问题，C++(Solving the Optimal Solution Problem of Linear Programming by Interior Point Method, C++.)

5个HFSS 无源器件包括：八木天线；功分器；耦合器；滤波器；混合网络-5 HFSS passive devices including: Yagi antenna splitter coupler filter hybrid network

it is useless, i am sorry

这是一个调试好的AD9858的verilog配置代码对初学者很有帮助(This is a debugged Verilog code for AD9858, which is very helpful for beginners.)

理论考试程序,可以自由下载,学习,请多多指点,批评-Theoretical examination procedures, are free to download, study, please advice, criticism

经典的分岔程序，相图程序，实用，可以参考学习(bifurcation,Classical bifurcation procedures, phase diagram procedures, practical, can refer to learning)

说明：  java code vrp for management location vihecules

一些不错的ICO图标，可以看一下啦！ 一些不错的ICO图标，可以看一下啦！-Some good ICO icon, you can look at you! Some good ICO icon, you can look at you!