查询词典 heightening

The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive, discusses the main research direction, and explains the main work in this paper. In chapter 2, hardware system which includes the design of power converter and various control circuit is discussed. TMS320LF2407 DSP is used to design the hardware circuits of SRM control system, and design details including the current detection, position sensing, fault protection, speed detecting, keyboard and display etc. are provided. Because of the full use of the abundant peripheral resources of DSP, it comes to the aim simplifying the circuit structure and heightening the reliability. In chapter 3, the application of neural network on SRM control system is introduced, a new the application of neural network and the method of sampling is proposed and a simulation system based on Matlab/Simulink is established. Chapter 4 discusses the routine designing issue. Because the modularized programming method is adopted, and multi-interrupt processing technique is used, operation efficiency of the control software is highly raised. At last, the foregoing SRM control system is tested. Speed adjustment is realized, and other targets on the research and design of SRM control system are reached, which establishes a good foundation for further research.

本文共分五章，第一章概述了开关磁阻电机调速系统(Switched Reluctance Drive，简称SRD)及其发展和研究现状，论述了其主要研究方向，并说明了本文的主要工作；接下来的一章主要讨论了SRM的硬件系统，主要包括功率变换器的设计和各种控制电路的设计，本文以TMS320LF2407为核心设计了开关磁阻电机控制系统硬件电路，给出了包括电流检测、位置检测、故障保护、测速电路及键盘和显示电路等部分电路的详细设计，充分利用了DSP的丰富外设资源，达到了简化电路结构、提高运行可靠性的目的；第三章介绍了人工神经网络在开关磁阻电机控制系统中的应用，提出了一种新的应用方式(利用GPFN神经网络调节PI参数)以及如何采取样本，搭建了基于Matlab/Simulink的仿真系统；在第四章中，讨论了开关磁阻电机控制软件的设计，采用模块化编程方法，采用基于多中断的控制程序，提高了控制软件的效率；最后，对所设计的开关磁阻电机控制系统进行了实验，实现了电机调速，达到了开关磁阻电机控制系统研究和设计的预期目标，为更近一步研究打下了基础。

Korea Security Association is aiming at contribution on heightening living safety and considering social trust in security business by fulfilling training them for enhancement of guards' quality and sound development in security business, by seeking to preserve members' dignity and protect their interests.

韩国保安协会的目标是提高生活在安全上的贡献，并考虑社会信任在安全业务培训为提高履行警卫的素质和安全业务健康发展，通过寻求维护会员的尊严，保护他们的利益。

These animals,which threshold of auditory nerve compound active potential and cochlear microphonic potential heightening evidently,showed that the amplitude of endolymphatic potential bring down in various degress,which was related to the change of the active of Na+-K+-ATPase and SDH in vascularis stria and endolymphatic sac.

研究证实，同种内耳抗原(isologous inner ear antigen，IIEAg)免疫可造成ASHL动物模型；并行体液与细胞转移免疫均获得成功；针对内耳组织的特异性抗体和淋巴细胞可经体液循环到达内耳局部；内淋巴囊(endolymphatic sac，ES)在其中起着重要作用〔1～4〕。

To research the water retention performance of lowland heightening farmland protection project in Tingzikou Water Control Pivot, large-scale soil column experiments and one-dimensional saturated-unsaturated flow simulations have been performed.

针对亭子口水利枢纽农田防护工程低地垫高方案的保水性能，在室内大型土柱试验的基础上，建立基于Richards方程的一维饱和-非饱和水流运动数学模型，模拟分析不同防护方案条件下土壤水分的运动过程和保水性能。

Post - Independence the government made special efforts to preserve and nurture the awesome cultural heritage, by setting up a number of new incentives, and by heightening media exposure at the national level, to propagate and popularise indigenous games.

独立政府尽一切努力去保护和支持令人敬畏的文化遗产，通过设立众多新的激励，提高在国家级别媒体的暴光率，去推广和宣传本土的运动。

"Music and psychedelics could help you make sense of the senselessness of it all by helping you come to your senses, heightening them."

只有音乐和迷幻药可以帮助我们摆脱麻木的状态，重新找回感觉，超越感觉。

To ensure the heightening engineering of tailing dam to successfully carry through, siphonic drainage system was adopted to lower the phreatic line in the dam.

为保证尾矿坝加高工程的顺利实施，采用虹吸排渗系统来降低坝体内部的浸润线高度。

Starting resistance increases with increase of thickness of mudstone layer, and increase of buried depth, and heightening of diagenesis degree, and decrease of sandy content, the ultra-pressure of fluid in pores increases as much as starting resistance with the change of above factors.

启动阻力随着泥质岩层厚度的增大、埋藏深度的增加、成岩程度的增强、砂质含量的减小而增大，孔隙流体超压也随上述因素的变化与启动阻力等量增大。

The starting resistance increased with rising thickness of mudstone layer,buried depth and heightening of diagenesis degree and with the decrease of sandy content.The ultra-pressure value of fluid in pores increased as much as the starting resistance with the change of above factors.

随着泥质岩层厚度的增大、埋藏深度的增加、成岩程度的增强及砂质含量的减小，启动阻力增大，孔隙流体超压值也随上述因素的变化而与启动阻力等量增大。

Soil erosion by wind, as a natural disaster haunts on dry lands, not only degrades soil productivity but also often results in dust blizzard weather. It may cause pollutions of air and water, damages of highway and railway, wear and tear of buildings and machinery and harmfulness in health of people and animals. Therefore, to combat wind erosion means improving the environment for people to live and work, means heightening the living standard of the local people, and means promoting productive forces. But China has a vast land where probably occur wind erosion disasters, the arid, semiarid and subhumid areas of the temperate zone all are potentially hit by wind erosion. To control wind erosion in China is a very arduous task. More difficult is to achieve recognizable effectiveness with lowest cost.

中文题名宁夏土壤风蚀研究副题名外文题名 Estimation of wind erosion in Ningxia 论文作者李玉宝导师王礼先孙保平教授学科专业水土保持与荒漠化防治研究领域\研究方向荒漠化防治学位级别博士学位授予单位北京林业大学学位授予日期2001 论文页码总数100页关键词风蚀土壤风蚀土壤侵蚀馆藏号BSLW /2003 /S157 /14 中国发生土壤风蚀的潜在区域包括温带干旱、亚干旱和亚湿润气候下的广大地区，如何有效地预防和治理土壤风蚀，如何以最小的代价达到满意的防治效果，这是很值得研究的问题。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。