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A topdown design of an 8bit RISC MCU is presented, in order to overcome the limitation of MCS51 microcontroller The core is based on Harvard architecture with 16bit instruction length and 8bit data length The performance of the MCU has been greatly improved by introducing singleclockcycle instructions, setting multiple highspeed working registers, replacing microprogram with direct logic block, etc FPGA verification and computer simulation show that its maximum clock frequency and instruction e...

在对传统的MCS51系列单片微控制器的局限性进行分析的基础上，设计了一种基于增强8位RISC构架的微控制器内核。该MCU核采用哈佛结构、16位指令字长和8位数据字长，通过设计单周期指令、在内部设置多个快速寄存器及采用硬布线逻辑代替微程序控制的方法，加快了微处理器的速度，提高了指令的执行效率。计算机仿真验证和FPGA仿真验证的结果表明，该MCU的最高时钟频率和指令执行效率等指标均优于MCS51的5倍以上。

The MGS upgrade is being performed under the ICBM Guidance Replacement Program, a modernization effort aimed at replacing and upgrading the 1970s-vintage electronics in the Minuteman III missile, which have been determined to be unreliable in flight due to aging effects.

GRP是诺斯罗普·格鲁曼公司所管理的八个主要的ICBM升级计划之一。诺斯罗普·格鲁曼公司负责为美军所有的陆基"民兵"III型导弹进行现代化，并维护其可靠性、安全性以及保密性。

This paper shows the principle and current application situation of unsalable LaCe/LaPrCe misch metal regarded as additive in aluminum,magnesium,zinc,copper,steel and alloy,mainly illustrates the application progress of magnesium alloy AE44 with high-performacec,low cost and great heat-resistant property by replacing Cewith LaCe/LaPrCe misch metal,and reportes the application of LaCe/LaPrCe in nickel hydrogen electrode cathode material.

综述了我国大量滞销的轻稀土资源LaCe/LaPrCe混合稀土金属作为添加剂在铝、镁、锌、铜、钢及其合金中的作用机理及其应用现状；重点阐述了用LaCe/LaPrCe代替富铈混合稀土金属作镁合金主要成分，开发出高性能、低成本、新型耐热镁合金AE44研发工作应用进展；报导了LaCe/LaPrCe在镍氢电极负极材料应用及组装成氢镍电池的简况。

By replacing pseudo-Mersenne numbers with generalized Mersenne numbers, we propose a new notion-Generalized Optimal Extension Fields, and study the fast arithmetic about multiplication and modular arithmetic in GOEFs.

利用广义Mersenne数代替伪Mersenne数，提出了广义最优扩域的概念，并研究其上的快速乘法运算和取模运算，为乘法运算给出了通用的复杂度公式，为取模运算给出了具体的运算公式，推广了Bailey，Mihailescu和Woodbury等在最优扩域上的相应结果。

Replacing the liquid molar heat capacity at constant volume by its molar heat capacity at constant pressure causes a relative error from 17%to 56%.

若以摩尔定压热容的值代替摩尔定容热容，在上述13种液体中的误差为17%～56%范围以内。

You might want to plan on replacing your mulch annually.

你也许要你复盖图更换一次。

As a means of evaluating teaching learning,the test plays an important guiding role in student's study and teacher's teaching.According to the characteristics of The Course of Theory of Machines and Mechanisms,on the basis of analyzing some disadvantages of the traditional testing manner,the reformation of multifold test replacing a simple test has been discussed in this paper.

一机械原理课程考试改革的必要性随着我国科学技术的迅猛发展以及社会对人才模式的多样化需求，高等学校培养的人才面临着市场的严峻挑战，培养具有创造性思维和创新人才以及较强的动手能力的人才已成为高等院校新世纪人才培养所必须解决的重要问题。

We were pleasure to do everything for her, washing clothes, preparing milk, replacing nappy etc.

我们乐于为她做任何事，洗衣服，冲牛奶，换尿布。

As a result, by merely replacing the gasoline injector with natural gas injector, a large volume of natural gas is injected on the intake valve and then reflected, which makes the fuel concentration and pressure field in the intake manifold after the natural gas injection for the natural gas engine differ greatly from those for gasoline engine.

结果表明，若仅把MPI汽油机的喷油器用天然气喷射阀更换，大量的天然气喷到进气阀后反射，造成天然气发动机进气岐管内的燃料浓度场、压力场与MPI汽油机明显不同；并且进气阀被打开后，先期吸入气缸的天然气在纵向滚流的作用下被挤向进气阀底部下方，与后期吸入气缸的空气形成明显的分层充气构造。

Buy new fittings in certified dealer for replacing.

所以在使用的配件老化后，需到专业经销商处购买。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。