以...为基础

Later, it makes some comparison with four kinds of modulation technique, and finally, it implements the three-level PWM switching power amplifier with the PWM technique. The power of the amplifier is 2kVA, and the frequency bandwidth is 10～3kHz. In the thesis, the author designs and makes the hardwares of the switching power amplifier. The hardwares contain power inverter rank circuit, control system circuit based on DSP, drive and isolation circuit, and protective circuit. The thesis also analyses the potential safety problems and put forward some solutions for the problems. Furthermore, the thesis accomplishes the software design of the control system, and successfully debugs it. The methods of designing higher power ampilfier are also discussed in the thesis. It analyses the feasibility of the methods, outlines the way of how to design higher power switching power amplifier, and does some experiments with the method of switches-parallelling.

根据电动振动试验系统对开关功放的要求，提出了以电感电流瞬时值控制技术为基础的三电平脉宽调制开关功放的设计方案，并通过系统仿真进行了原理性论证；然后设计并制作了开关功放的硬件，包括功率转换电路，基于DSP的控制电路，驱动、隔离电路以及保护电路；针对开关功放数学模型不易得出的特点，细致分析了模糊自适应PID控制方法，在此基础上编写了控制程序；研制出一台功率为2kVA，通频带为10～3kHz的三电平脉宽调制开关功放；论文中还探讨了实现大功率开关功放的方法，分析了各种方法的可行性，给出了实现大功率开关功放的思路，并进行了并联开关管实现大功率开关功放的实验。

As a government, it should direct and lead agriculture's industrialization by macroscopical programming and microcosmic regulation and controlment to create conditions and lay foundations for agriculture's industrialized management .

政府的调控措施应是：构建适应农业产业化经营发展需要的政府调控体制；通过宏观规划和微观示范来指导和引导农业产业化经营，实施以市场机制为基础的间接调控，要为农业产业化经营的发展营造良好的外部环境和提供更多更好的服务，积极推动制度创新，为发展农业产业化经营奠定基础和创造条件

In the methods cyclic production rate is used as a foundation, cyclic maximum daily average revenue is used as an optimized object and the genetic algorithm is used as a tool for an optimized design of steam injection pressure, dryness fraction of steam, steam injection rate, cyclic injection volume, soak time, and bottomhole flow pressure.

该方法以周期采油量计算为基础，以周期平均日收益最大化为优化目标，以遗传算法为手段，对注汽压力、注汽干度、注汽速率、周期注汽量、焖井时间及井底流压进行整体优化设计。

So, the emprises organization cortrol competence in hyper competitive environment is a kind of dynamic competence, which is based on the super competition of the enterprise, and is a kind of integration competence giving priority to knowledge. And, this kind of competence can adjust the stratagem in time, maintaining the continuous competition advantage.

基于此，超竞争环境下的企业组织控制能力是一种动态能力，是以企业所处的超竞争环境为基础，以企业所拥有的认知能力、学习能力和匹配能力等控制力为核心，以知识为主线的综合控制能力，做到及时对战略进行调整，实现企业的持续竞争优势。

Each production company are in accordance with the characteristics of character for the production of human engineering concepts to design a sense of the whole and the power first, based out raw materials, precision manufacturing, quality control combined with layers of highly Jing Zheng marketing programs and marketing network, the formation of unique quality and thoughtful after-sales service system, as a maker of office furniture to provide our full attention to detail, efficient service, and accompanied by "tailored" service to customers quality products, the customers trust and support.

公司每一件产品的生产，都是依符人体工程学的特点为生产理念，以设计的整体与力感为先，以货真价实的原材料为基础，精工制造、层层质检加之极具竟争的营销方案与营销网络、优质周到的售后服务形成独有的体系，作为一个办公家具的造者我们全力为客户提供周到细致、高效的服务并配以&量身订做&服务，向客户提供优质产品，取得客户的信任与支持。

On the basis of Attribution Theory and existing researches on the SELD, this thesis conducts an investigation and gets some conclusions from it: SELD's English learning inefficiency is influenced mostly by their English teachers externally and by learning motivation, learning interests, learning emotion and learning strategies of students themselves internally.

本文以归因理论和许多专家学者关于学习困难学生问题的研究成果为基础，通过调查得到结论：学习困难学生形成的原因主要集中在以教师教育影响为表现的外因上和以学生自身的学习动机、学习兴趣、学习情感和学习策略影响为表现的内因上。

Putonghua pronunciation is in Beijing for BiaoZhunYin, phonology, based on a typical modern dialect pai-hua works for the modern Chinese grammar national dialect.

普通话就是以北京语音为标准音，以北方话为基础方言，以典型的现代白话文著作为语法规范的现代汉民族共同语。

China's university may learn from the notion of "Multiversity"and achieve an harmony between the ideas of liberal education , scientific research and social services.

在思考中国大学理念时有必要借鉴巨型大学的模式，实现多重理念在大学的融合，使大学体现以通识教育为核心的博雅教育理念、以知识创新为目标的研究型大学理念以及以学术为基础的社会服务理念。

The quantitative analysis of historical sedimentology for lithofacies successions is a kind of qualitative and quantitative analysis method which is based on dynamical sedimentology analysis, making use of geomathematics and electronic computer.

岩相剖面的定量历史沉积学分析是以动力沉积学分析为基础、以数学地质为方法、以计算机为工具的定性-定量分析法。

Each department, finish the relevant work in variety assigned by the upper department and requested by other lines calling for assistance, and include in assessment in the form of overall satisfaction of the department on targeted tasks and its amount of information reported to the upper level, thesispublication and further education. The content of the eight types determined by the top management according to Target Responsibility System during Office Term of Legal Representative Entrusted to Manage Medical Services and Assets Operations, the annual tasks passed in Hospital Employee RepresentativeConvention and the periodical, temporary or sudden tasks to be necessarily finished aiming for sustainable development of the hospital are assigned regularly by the President through President Office Meeting and etc. so as to confirm the work to be handled by each department. Excellent achievement obtainedon a provincial or municipal level by each department who has taken an initiative to work hard by meeting new requirements arising from the Time and actual needs by the hospital development is regarded as innovation. Each functional department employs the approach combining regular assessment of key objectiveswith punishment against ordinary objective-related defect to make assessment quarterly as per weight of 60%, 30% and 10% see Encl.

以各部门根据具体业务和工作职能来制定日常工作目标，完成相关条线、上级部门布置的各项工作，和其他条线提请协助的工作为基础工作，同时通过目标任务书的形式，将科室的综合满意度、信息上报数、论文发表及继续教育列入考核的指标；以院部根据《医疗服务、资产经营委托管理法人代表任期目标责任制》确定的医院八大类内容，医院职代会通过的年度工作任务，以及医院可持续发展需要完成的阶段性、临时性、突击性工作目标，通过院长办公会等形式，由院长定期布置下达，确定各部门承担的工作为重点工作；以各部门顺应时代发展的新要求和医院发展的实际需要，积极思考和开展自主性工作，并在省、市内取得佳绩的为创新工作。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。