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Abstract: Based on the data from the runoff plots, analyzed on the regularity and affected factor of the runoff and sediment yield in the farmland with different underlayer condition in the loess hilly areas of Changwu County, Shaanxi Province, and point
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文摘:以径流小区的观测资料为依据，对陕西长武不同下垫面条件农田产流产沙规律及影响因素进行了分析，指出降雨强度、降雨历时、坡度和覆盖条件是影响黄土沟壑区农田产流产沙的最主要因素。 |
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Abstract: Based on the data obtained from field observations and deformation monitoring,this paper deals with the deformation and failure of a double-decked slope composed of soft rock strata in its lower part and hard-brittle rock strata in its upper par
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文摘:以现场考察和变形监测资料为依据，探讨一个下部有软弱基座，上部为硬脆性坡体的“二元结构”边坡的变形破坏问题，揭示这类边坡的变形总是以下部软弱岩体的不均匀压缩流变为先导，进而引起上部硬脆性坡体的拉裂与倾倒，最终通过渗入水的作用，使下部承载状况已进一步恶化了的软弱岩体，沿剪应力集中带发生剪切破坏而导致整个变形坡体的下滑。 |
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Abstract: Based on the deformation characteristics of the tread element at typical load cases,this paper determines the displacement functions of the element by using the energy method and derives the theoretical formulae for the apparent compressive stif
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文摘:根据轮胎胎面单元在典型工况的变形特点，用能量法确定了胎面单元变形的位移函数，导出了轮胎胎面单元表观压缩刚度和表观剪切刚度的理论计算式。 |
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Abstract: Based on the design method and design means of the explosive network, CAD techno logy is used to design the explosive network, and the research content and schem e are given.
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文摘:从爆炸网络的设计方法和设计手段出发，采用计算机辅助设计（CAD）实现爆炸网络的设计，提出了研究内容和实施方案。 |
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Abstract: Based on the destruction mechanism of earthquake to buildings and the theory of frame e-lastic-plastic force, a discussion is made of how to enhance the antiseismic ability of frame structure dur-ing the construction.
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文摘:针对地震对建筑物的破坏机理，根据结构弹塑性理论，提出了在施工中为提高框架结构抗震能力应特别注意的问题。 |
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Abstract: Based on the detailed analyses and studies on the feature and harmfulness of geological disasters in Fujian Province, the authors put forward several control measures in order to raise the abitity to prevent and reduce geological disasters in Fu
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文摘:通过对福建地质灾害现状及危害的分析、研究，提出防治福建省地质灾害的对策，以提高福建省防灾减灾能力，减少和避免地质灾害造成的损失。 |
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Abstract: Based on the electronic focus technology development of state-of-the-art,the paper suggested a complete apparatus s cheme ofauto-focus based on SSPD(self-scanned photodiode array)and 8098 singl e chipprocessor,giving out a focus criterion algori
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文摘:在介绍与分析了国内外电子调焦系统的技术发展与现状的基础上，提出了一种基于SSPD（自扫描光电二极管列阵）与8098单片微处理器自动调焦的整体技术方案，给出了基于图像高频成分统计的聚焦判识算法，在此基础上实现了反射式与透射式光学显微镜的自动调焦，同时对系统的可靠性有关的其它相关问题如光源稳定性、步进电机驱动等问题也进行了讨论。 |
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Abstract: Based on the environmental laws of country, in the way of environmental engineering and system engineering, dissertating the definition action and realizing ways of waste minimization, dealing the relationship of waste minimization and environme
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文摘:依据国家环保法规，遵循环境工程学和系统工程学的基本原理,结合环境管理的实务经验，分析、讨论了工业减废的定义、作用与实现途径，论述了工业减废与环境审核的内在联系。 |
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Abstract: Based on the experimental investigation into cutting force in milling, a new algorithm, i.e. the low-pass digital filter, was proposed and developed for tool breakage detection in milling,and a lot of experiments have been carried out to verify
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文摘:本文在对铣削扭矩进行实验分析的基础上，从数字信号处理的角度出发，提出了频域内用于刀具破损监测的低通数字滤波算法，详细介绍了低通数字滤波器的设计原理，并对该算法进行了实验验证。 |
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Abstract: Based on the fundamental theory of computation of the cable-prestressed steel trusses established in paper［1］,the iterative perturbation formulas which inversively determine the stiffenesses of elements of steel trusses and cables with the restr
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文摘:基于文［1］所建立的拉索式予应力钢桁架基本计算理论，根据矩阵摄动原理进一步给出了以竖向结点位移为约束反演确定任意布索张拉予应力钢桁架单元刚度和拉索刚度的摄动迭代公式。 |
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Abstract: Based on the fuzzy mathematics,it establishes the rules of the fuzzy reliability design for the bolt-joint set,discusses the effect of pre-tighten force and the axial changing load on the set,and shows an example.
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文摘:将模糊数学理论引入可靠性设计中，考虑预紧力和轴向变载荷状态的影响因素，建立螺栓联接的模糊可靠性设计准则，并给出了设计实例。 |
