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This paper briefly introduces the production and the characteristic of high Belite cement, and discusses the main reason of its good workability, high long-term strength and perfect durability,meanwhile,also discusses its adaptability to the climate of Hainan.
简要介绍了高贝利特水泥的生产及其特性,讨论了高贝利特水泥具有工作性好、长期强度高和耐久性好的主要原因及其与海南气候的适应性。
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In this paper the author overviews mass magnesia concrete dam thchnical origin, the present status here and abroad, and available primal problems; descripts theexpansive character of magnesia concrete, fundamental force performances and long-term lasting quality, derivates all the equations of temperature field and temperature stress field, analysises the existing canonic calculating autogenous volume deformation model of the micro-expansive concrete, at last select the expansion model of dynamics for calculating.
本文综述了大体积混凝土氧化镁筑坝技术的由来、国内外研究现状、优势及存在的主要问题;叙述了掺氧化镁微膨胀混凝土的膨胀特点、基本力学性能及长期耐久性能;推导了计算温度场及温度应力场的全部公式。对现有计算氧化镁混凝土自生体积变形的几个典型模型进行了深入的研究和分析,阐述了它们各自的优缺点,最终选定动力学模型作为计算氧化镁混凝土自生体积变形的数学模型。
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This paper analyses the long-term tendency and the reasons of the growth of Chinse juvenile after China s reforming and opening.
分析我国改革开放后青少年生长的长期趋势及其原因,为青少年体育教育提供依据。
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The paper presents the authors view on a supposed strategy of developing West China in term s of system ic collectiveness, relativity, environmental adaptivity and stratification .
从系统的集合性、关联性、环境适应性、层次性等不同角度对西部开发应采取的策略提出了自己的观点。
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According to the unstable condition of the displaceable block and the breakage term of the stratified rock, this paper analyzed the stability of surrounding rock during the excavating process in different geological structures.
长江科学院监理公司,湖北武汉430030中文摘要:结合工程实例,基于块体的失稳条件和层状岩体的破坏条件,分析不同地质构造形态岩层下,隧洞开挖过程中围岩的稳定性。
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The main works of this paper include four points as follows:(1) Patent retrieval domain ontology is designed through analyzing the common concepts in searching patent information. And the international patent classification table is expressed using ontology;(2) Design users'interests model from the information actively provided by users and passively provided by system based on users'requirements and historical searching record;(3) Design and implement three patent retrieval modes: quick search, table search, and advance search to meet various users'demands. And combine ontology, user's interest model and the inputed retrieval condition when users search for patent informations. This realizes individualized retrieval which meets the demands of users;(4) When users's search term is inaccurate, the precision will drop markedly and users will receive many disrelated informations.
本文的主要工作包括以下四点:(1)通过分析专利检索的常用概念,设计了专利检索领域本体和国际专利分类表(International Patent Classification,IPC)的本体表示;(2)根据用户的需求以及历史检索记录,从用户主动提供和系统被动学习两方面着手,设计了用户兴趣模型的本体表示;(3)为满足不同层次、不同需求的用户,设计并实现了三种专利检索方式:快速检索、表格检索、高级检索,并将本体、用户兴趣模型、用户输入的检索条件三者相结合,实现满足用户需求的个性化检索;(4)通过设计将检索结果按IPC号分类,由用户自主选择需要浏览的类别来为用户提供个性化服务。
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This paper reviews the processes in glacier hydrological model in term of runoff generation model and runoff concentration model, analyzes the runoff generation mode from two most widely ablation model (the meteorological factors statistical model and the energy balance model), and enlarges on the runoff concentration model from three sub-models: the surface routing sub-model, the englacial hydrology sub-model and the sub-glacial hydrology sub-model.
从冰川产流和汇流两个水文物理过程出发,介绍了国内外冰川水文模型的研究进展,对目前应用最广的两类消融模型-基于气象因子的统计模型和基于物理机制的能量平衡模型进行了分析和讨论;从冰川表面、内部以及下部汇流3个方面阐述了冰川汇流模型所取得的成果。
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Based on introducing the grey system theory,this paper discusses on the principle of the forecast of equidimensional filling vacancies,advances the dynamic model of grey forecasting of equidimensional filling vacancies in the medium-long term load forecasting of power system,and forecasts the yearly load value of this area in the period of 1999-2009 with the model established by using the historical load data of some areas.
在介绍灰色系统理论的基础上,讨论了等维递补预测原理,提出了电力系统中长期负荷预测的灰色等维递补预测动态模型,并利用某地区的历史负荷数据建模预测出了该地区1999—2009年的年负荷值。
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In term of analysis and comparison of differences on ornamental plants among UPOV 1991 and 1978 Convention, and Chinese Regulation on PVP, this paper focus on the specialty of PVP for asexual fruit crops and ornamental plants, and feasibility and advantage of UPOV 1991 Convention to them, such as essentially derived variety and farmers' privilege. Meanwhile, based on present situation of flower Industry development, breeding and creation, and world trade of floricultural crops, the author points out the opportunity and challenge of flower Industry development in China, and proposes a strategy of IPR and PVP on Chinese flower industry.
本文在分析对比 UPOV 公约1991年、1978年文本和我国《植物新品种保护条例》的主要区别及其在观赏植物适用方面存在诸多差异的基础上,重点探讨了无性繁殖花卉和果树类植物新品种保护的特点以及 UPOV 公约1991年文本对这些特点进行的适用性修改与完善,主要表现在实质性派生品种和农民豁免权方面;结合我国的观赏植物育种、花卉产业发展与花卉国际贸易现状,详细解析了知识产权战略与新品种保护制度给花卉业发展带来的机遇与挑战;在此条件下,提出我们自己的应对策略。
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The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.
本文以河北省曲周县为例,采用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据,系统分析了过去20年中土壤有机质的动态及其与之相关的农作管理方式的变化。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。