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Based on the basic principle of reflection and transmission in the process of the propagation of logitudinal wave, this paper recounts a new theory and method for the application of pile body completeness inspection data with reflection wave method to the
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摘要从纵波传播过程的反射和透射的基本原理出发，介绍了反射法桩身完整性检测数据在频率域中定量确定视反射系数和反射波往返时间的一种新的理论和方法。 |
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Based on the basic principle of sequencestratigraphy, startedwith the analysis of seismic stratigraphy, logging cruve, sequence of sedimentary, the paper divided the sequence of shahejie Formation into four sequences and established it's stratigraphic fra
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摘要以层序地层学的原理为指导，从地震层序、测井曲线、沉积层序分析入手，对东营凹陷沙河街组沙三、沙四段层序地层格架进行了研究，划分出4个三级层序，并划分出了体系域，确立了地层格架。 |
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Based on the basic research, the hidden cavity was detected in Changba Lead-zinc Mine with Ground Penetrate Radar and Rayleigh wave detector, and the detected result would provide technical support for safety mining.
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分析了各自相应的适用条件，并综合应用探地雷达法和瑞雷波法在厂坝铅锌矿进行了地下群采空区的现场探测，基本查明了试验采场采空区的分布情况，为后续的安全回采提供了技术支撑。 |
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Based on the basic theories of urbanization, this paper examines the determinants of urban population growth in China in the l990s.
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摘要文章从城市发展的基本理论出发，利用计量经济学模型，分析了中国20世纪90年代城市人口增长的决定因素。 |
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Based on the biological characteristics and principles, by analysis of the structure and number of protozoa, we can quickly get useful information on the activated sludge process, and subsequently give directions to the performance.
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根据原生动物的生物特征及其在不同环境条件下的种属、数量、活性等表现，通过其组成和数量的分析，可以迅速为活性污泥工艺提供有益的指示信息，从而指导污水厂的生产运行。 |
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Based on the bouncing dynamic model &vibration equation established in paper we analyse the damping ratio of vehicle suspension.We discass the stabilation of vibration system when the equivalent damping of shock absorber is zero or negative.We also provid
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该文在建立振动动力学模型和运动方程的基础上，通过对车辆悬架阻尼比分析，就减振器阻尼等效为零或为负时，对振动系统稳定性影响及产生原因进行了探讨.提出设计和制造过程中有效控制系统稳定和非保守特性的技术路线. |
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Based on the brief introduction of the complexity of power system, this paper introduces the application of system complexity theory in power system and the research status, including self-organized criticality, cascading failure model, structure vulnerab
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摘要在简述电力系统复杂性的基础上，介绍了系统复杂性理论在电力系统中的应用以及研究概况，包括电力系统的自组织临界性、电力系统连锁故障模型和复杂电力网络的结构脆弱性和连锁故障演化等，进一步指出电力系统复杂性理论的研究可能为探索互联电力网络的安全性和可靠性提供一个新的方向。 |
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Based on the building of a model of progressive tax rate counting progress, the following paper, after a quantitative analysis on the phenomena of the tempestuousness of full progressive tax rate and the easement of extra progressive tax rate, and an anal
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文章在对累进税率计税过程建立模型的基础上，对全额累进税率累进剧烈和超额累进税率累进缓和现象，以及用超额累进税率计税时所涉及的速算扣除数进行了定量分析，从而使得抽象的理论在推理中得到了明晰，有助于对累进税率更加深入和全面的理解。 |
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Based on the calculation methods of nominal water-cement ratio of mortar and average paste thickness of standard sand provided by authors, the nonlinear relation between fluidity of mortar and nominal water-cement ratio of mortar, average paste thickness
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摘要在给出水泥胶砂名义水灰比和标准砂平均浆体厚度计算方法的基础上，采用人工神经网络方法，建立了水泥胶砂流动度与水泥胶砂名义水灰比、标准砂平均浆体厚度、粉煤灰与胶凝材料用量比之间的非线性映射关系。 |
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Based on the calculation model and theory of saturated-unsaturated soil seepage, this passage takes the influence of unsaturated zone in seepage field on dam seepage into account, and it also does the seepage finite element calculation and analysis for a
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基于饱和－非饱和土渗流计算模型与原理，本文考虑渗流场非饱和区对堤坝渗流的影响，对某土石坝进行了渗流有限元计算与分析。 |
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Based on the calculation of shearing-slipping failure probability of high arch dams, the calculation method and procedures are presented by use of the Second Moment Method for calculation of the occurrence probability of the major failure modes of high ar
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以计算高拱坝剪滑溃坝发生概率为例，说明利用二阶矩法计算高拱坝各主要失效模式发生概率的步骤，进而求解各失效模式的相关程度及具有多个失效模式高拱坝的失效概率。 |
