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Abstract: On the basis of the analysis about noise sources of the air compressor,it shows that air dynamic noise is primary one.According to the theory of fluid mechanics,the mathematics model of the air compreesor air dynamic noise is found,which shows t
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文摘:通过对空压机噪声源的分析，确认空压机噪声源中的空气动力性噪声为最强；由流体流场的声学理论，建立空压机动力性噪声源的力学模型，它表明声功率与其它参数的关系；并知空压机的空气动力性噪声呈低频特性，这为噪声及振动控制提供了可靠的依据. |
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Abstract: On the basis of the atmosphere-crop-soil systems, the synthetical production potentiality model of the grain crops is established in Guizhou, the concept of crop increase production potentiality index is posed, the prospects of the synthetical i
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文摘:从大气作物土壤系统出发，建立了贵州省主要粮食作物综合生产潜力模式，提出了作物增产潜力指数的概念，分析了在现实条件下和未来条件下作物综合增产潜力的前景。 |
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Abstract: On the basis of the author's theoretical study on translation and bilingual lexicography and her own experience in translating the New Oxford Dictionary of English, this paper attempts to find out the criteria for translating entry words in Engl
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摘要：作者通过学习研究翻译学和双语词典学的有关理论知识，并根据自己参与编译《新牛津英汉双解词典》的实践经验，试图揭示英汉词典中的词条翻译标准。 |
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Abstract: On the basis of the background of bus rapid transit planning in Jinan, this paper introduces the necessity of developing bus rapid transit planning in Jinan.
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摘要：本文在介绍济南快速公交系统规划背景的基础上，阐述了济南发展快速公交系统的必要性。 |
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Abstract: On the basis of the basic principles of ecology,the shrub vegetation in the Hexi Corridor was classified into eight types,of which distribution,ecological characters,ecological significance and relations with soil were studied,with emphasis on t
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文摘:本文从生态学基本原理出发，对河西走廊灌丛植被以群落建群种为基础进行了分类研究，将灌丛植被划分为8个类型，分别对灌丛群落的分布、生物学特性、生态学意义以及各类灌丛植被与土壤之间的关系，特别是对灌丛植被在改善河西走廊生态环境的作用、在干旱荒漠系统的防风固沙、建立荒漠草场以及防治荒漠化等方面进行了研究，并就河西走廊荒漠系统生态重建与可持续发展提出了对策。 |
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Abstract: On the basis of the constituent chemical bonds of crystal materials,the application of chemical bond viewpoint in the search for new type nonlinear optical crystal materials was studied and disscussed in the present work.
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文摘:从晶体组成化学键的角度出发，研究和探讨了化学键观点在寻找新型非线性光学晶体材料工作中的应用. |
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Abstract: On the basis of the current situation of the researches on earthquake prediction and earthquake mechanism，the authors of this paper give their opinions on the complication of the crust and its dynamic process,and make a brief description of the
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文摘:就地壳及其动力学过程的复杂性,结合地震预报与机理的研究现状和方法,提出了个人的看法,简介了非线性动态有限元方法。 |
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Abstract: On the basis of the practical design experiences and relatedreference literatures ,the basic principles,development process,key waveforms,performance features and application points of five new PWM constant current feedback control modes for inv
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文摘:根据实际设计工作经验及有关参考文献，比较详细地依据基本工作原理图说明了逆变焊机用的5种新型PWM恒流调节反馈控制模式的基本工作原理、发展过程、关键波形、性能特点及应用要点[1～3]。 |
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Abstract: On the basis of the property of superfine explosive HMX suspension and mechanism s of agglomeration & coagulation, influences of different agglomerants and coaga lants used alone or complexly on the subsidence property of superfine HMX suspe
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文摘:根据超细炸药HMX(奥克托今)悬浮液的性质，以及凝聚和絮凝作用机理，研究了凝聚剂、絮凝剂单组分及复合使用时对悬浮液沉降性的影响，并对不同的方案进行了比较。 |
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Abstract: On the basis of the relationship of public realm and public parks, especially in land acquisition and use, this paper gives an introduction of the development of urban parks and open space, current parks development strategies and some new direc
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摘要：本文通过对美国的公共领域与公园的关系的探讨，侧重土地的获得与利用，主要介绍美国城市公园和开放空间发展的历程、当今公园发展策略以及一些新的发展方向。 |
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Abstract: On the basis of the stat-of-the-art of protective buffers for base isolation, the step-stiffnessbase isolator of concrete filled steel tubular short column is put forward.
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文摘:在总结目前基础隔震缓冲限位装置现状的基础上，提出了梯队式变刚度钢管混凝土短柱基础隔震装置。 |
