查询词典 threepenny bit

In order to extend the effect and security of image encryption algorithm.An image encryption algorithm is presented based on three-dimension chaotic system and bit-computation.The permutation sequences and binary sequences are generated using three-dimension chaotic system.Firstly,the image is pretreated using chaotic system and permutation transformation,then the pixel's gray value's bit sequences are permuted using the permutation sequences generated before,at last,the pixel's gray value's bit sequences are computed by using XOR operating and the binary sequences.

为了改进图像加密算法的安全性和效率，提出了一种基于三维混沌系统和位运算的数字图像加密算法，利用三维混沌序列的坐标分量分别产生置换序列和二值序列，在对待加密图像进行预处理的基础上，先应用混沌置换序列对预处理的结果图像进行基于灰度值位序列的置换操作，然后再应用产生的二值序列对结果图像的灰度值位序列进行位异或加密运算。

Adopting the system and method in the invention tessellates to exchange the data according to bit and realizes the function of executing non-blocking exchange according to the bit in time slot; the invention is able to output any input bit on the appointed position of all needed outputting channel, which not only improves the flexibility of the data exchange, but also decreases the cost and has high cost performance.

采用本发明的系统及方法，细化到将数据按照比特进行交换，并且实现了按照时隙中的比特进行无阻塞交换的功能，可以让任意一个输入的比特在所有需要输出通道上的指定位置输出；不仅提高了数据交换的灵活性，而且降低了成本，性价比高。

During the read operation, which connects a bit line or bit line bar to a memory cell, the charges stored in a memory cell may change the voltage level of the bit line.

在读取作业期间，将一位线或位线棒连接至一存储单元，存储于存储单元中的电荷可改变位线的电压电平。

For enhancing the system performance, the simple bit-wise indexing method was applied to the manufacturing defect detection problem, time aspect for manufacturing domains. For improving the flexibility and accuracy, the encapsulated bit-wise indexing method is applied to the pattern matching module of an Internet intrusion detection system. To reduce the processing time, the compacted bit-wise indexing method is applied to the data-driven rough-set based feature selection. Additionally, the proposed feature selection method was adopted in a KA project to discover the desired feature sets to construct a CBR system for a world-wide financial group customer relationship management system's loan promotion function.

而这四个实际系统包含应用在制造过程中由於制程时间的问题所产生的产品缺陷之以遗传演算法之制造缺陷侦测系统、应用在网路入侵侦测系统中的入侵模式的挖掘与比对以提升系统弹性及效率、应用在以资料为导向之约略集合论特徵选取技术并使用於知识撷取系统上以节省执行时间及应用在半导体制造过程中用於缺陷侦测的资料挖掘系统以提升系统效能。

Four 8-bit I/O Ports C Three 16-bit Timer/Counters C 256 Bytes Scratch Pad RAM C 8 Interrupt Sources with 4 Priority Levels C Dual Data Pointer Variable Length MOVX for Slow RAM/Peripherals High-speed Architecture C 10 to 40 MHz in Standard Mode 16K/32K Bytes On-Chip ROM Program T80C51RD2 ROMless Versions On-Chip 1024 bytes Expanded RAM C Software Selectable Size (0, 256, 512, 768, 1024 bytes) C 256 Bytes Selected at Reset for AT87C51RB2/RC2 Compatibility Keyboard Interrupt Interface on Port P1 8-bit Clock Prescaler 64K Program and Data Memory Spaces Improved X2 Mode with Independant Selection for CPU and Each Peripheral Programmable Counter Array 5 Channels with: C High-speed Output C Compare/Capture C Pulse Width Modulator C Watchdog Timer Capabilities Asynchronous Port Reset Full Duplex Enhanced UART Dedicated Baud Rate Generator for UART Low EMI Hardware Watchdog Timer (One-time Enabled with Reset-out) Power Control Modes C Idle Mode C Power-down Mode C Power-off Flag Power Supply: 2.7V to 5.5V or 2.7V to 3.6V Temperature Ranges: Commercial (0 to +70C) and Industrial (-40C to +85C) Packages: PDIL40, PLCC44, VQFP44

四8位I / O端口C款三16位定时器/计数器 256字节RAM的便笺簿 8中断源4优先级和C双数据指针MOVX在缓变长内存/外设高速架构为C 10至40 MHz的标准模式16K/32K字节的片上ROM程序T80C51RD2无ROM版本片1024字节扩展RAMC软件可选尺寸（0，256， 512，768，1024字节）C选取在重置为AT87C51RB2/RC2兼容键盘中断接口与独立的选择港口小一8位时钟分频器64K的程序和数据存储器空间的改进X2模式的CPU和256字节每个外设可编程计数器5通道的阵列：C型高速输出C比较/脉宽调制器捕获看门狗定时器复位功能异步端口全双工增强型UART的波特率发生器的UART低EMI硬件看门狗定时器电源控制模式空闲模式C掉电模式C断电旗电源：2.7V至5.5V或2.7V至3.6V温度范围：商业（0到+70 C）和工业（- 40C至+85℃）封装：PDIL40，PLCC44，VQFP44

Cone bit ; bit bearing ; bit lubrication ; load ; calculation

牙轮钻头；钻头轴承；钻头润滑；载荷；计算

The transmission ratio (cone/bit rotary speed ratio) of a mono-cone bit was tested on the bit test stand.

单牙轮钻头的牙轮转速与钻头转速之比是研究和设计钻头的重要参数。

By means of numerical solution method, drillstring's finite element models, and based on mechanical models of bit/rock interaction, the dynamic models for lateral vibration of a cone bit are established. The contact models of bit/wellbore interaction are created on the basis of the experimental data.

为探寻在实际钻井过程中钻头的运动轨迹和与井壁碰撞时撞击力的变化规律，利用有限元方法，建立钻柱横向振动的有限元动力学模型，并在考虑钻头-岩石互作用力学模型的基础上，建立了钻头横向振动动力学仿真模型，通过实验及相关数据得到预测钻头与井壁碰撞时撞击力大小的计算公式。

With the geometry model and kinematics model of roller cone rock bit, the interaction model of rock bit and rock is established which was based on the experiment of interaction between single tooth and rock. It is a good fundament for the computer simulation on working action of rock bit drilling.

在牙轮钻头几何学、运动学基础上，利用单齿压入与刮切岩石实验建立了钻头与岩石互作用力学模型，实现了对钻头在钻井过程中工作行为的仿真计算； 2。

Blue ribbon diamond drill bit accessories factory network solid name: Domestically produced diamond drill bit; General website: The domestically produced diamond drill bit ( www.blueribbon888.cn is one produces the research and development, the management sale is a body's company.

蓝绶带水钻饰品厂网络实名：国产水钻；通用网址：国产水钻( www.blueribbon888.cn 是一家生产研发、经营销售为一体的公司。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。