艾里光和贝塞尔光

RC5 encryption algorithm is a new fast symmetric block cipher developed by Ron Rivest for RSA Laboratories. Intended as a possible successor to the Data Encryption Standard, RC5 has a variable word size, a variable number of rounds, and a variable-length secret key, so the user can explicitly manipulate the trade-off between higher speed and higher security. RC5 is suitable for hardware or software implementations; the encryption and decryption algorithms are exceptionally simple. A novel feature of RC5 is the heavy use of data-dependent rotations.

动作类游戏，很适合现在的年轻朋友玩，而且设备简单，操作灵活，内容有趣-action game, which is perfect for the young people to play, but simple equipment, operational flexibility, interesting!

有线 无线 双模式八路抢答器 使用无线收发模块 编码解码芯片-cable, wireless dual mode Eighth Route Army Responder use wireless transceiver chip codec

设计并制作出汽车信号灯微机控制系统； 2）所需执行的操作由相应的开关控制，所需控制的信号灯有： 仪表板左/右转向灯、左/右头灯和左/右尾灯及左/右刹车灯共8个灯，其驾驶操作与灯光信号对应关系如下： (1)左/右转弯(合上左/右开关)：仪表板左/右转向灯、左/右头灯、左/右尾灯闪烁。 (2) 紧急开关合上：除左右刹车灯以外，所有灯闪烁。 (3) 刹车(合上刹车开关)：左右刹车灯亮。 (4) 左/右转弯并刹车：仪表板左/右转向灯、左/右头灯、左/右尾灯闪烁，左右刹车灯 亮。 (5) 合上紧急开并关刹车：仪表板灯、头灯、尾灯闪烁，刹车灯亮。 (6) 停靠(合上停靠开关)：头灯、尾灯以20Hz的频率闪烁。 -designs and produces vehicle lights microcomputer control system; 2) the implementation of the operation from the corresponding switch control, the control signals required : the dashboard left/right shift lights, left/right front and left/right rear and left/right brake lights a total of eight lights, driving its operation and light signals corresponding relationships are as follows : (1) Left/right handers (Hopewell on the left/right switch) : the dashboard left/right turn signals, left/right headlight, left/right rear flashing. (2) emergency switch matches : Apart from the brake lights around outside, all lights flashing. (3) brakes (a switch on the brake) : about b

echart 官方版本，方便大家下载！！！(Echart official version, convenient for you to download!!!)

计算光学相对强度噪声的方法，除计算公式外，对物理过程也进行了详细说明(method to calculate optical RIN, include formula and instruction of physical meaning)

说明：  用于插入nastran提交文件.bdf文件中提取出基于偶极子网格法求的气动影响系数矩阵(It is used to insert nastran submission file and extract aerodynamic influence coefficient matrix based on dipole mesh method from BDF file)

对python中数据类型字符串进行详细介绍，以及对正则表达式的申明(data type alphabetic string be in progress detailed introduce declare)

说明：  使用python seleium 开发的简单爬虫小程序(A simple crawler developed by Python seleium)

说明：  反步法控制器matlab仿真，提供代码说明，基础学习(Matlab simulation of backstepping controller, providing code description and basic learning)