• 采用静态亚热带稻田生态系统CO2排放进行了定位观测

    The orientational observation of CO2 emission from paddy ecosystem in subtropical region was carried out, adopting closed static chamber technique.

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  • 利用枪口烟雾测试系统,研究感剂种类和用量对枪口烟雾影响

    A new method to measure gun muzzle smoke is adopt to investigate the influence of some gun propellant deterrents.

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  • 利用防护数值模拟方得到了砌块绝缘系数最大砌块结构。

    The parameter of the block is gained when its thermal resistance value is maximum by the guarded hot box and the numerical simulation.

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  • 采用实验,作者自行制作两个实验热,用来测量材料的传热系数。

    According to the measurement principle of the stabilized heated box, two insulated model heated boxes were built in this thesis.

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  • 利用改进箱法玉米生根生物进行了原位采样和观察采用载玻片贴片直接采集作物根系分泌物中的生物,并用荧光显微镜进行观察。

    The organisms from crop root exudates were collected directly by putting slide onto root surface and observed the organisms on the slide and root surface by fluorescence microscope.

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  • 静态冬小麦不同基肥施用方式(表施、深施)不同施用量下的土壤NO排放通量进行了研究,结果表明:肥料在土壤中的位置对NO排放通量影响非常显著。

    Effect of different basal-dressing application methods and different amounts of fertilizer on NO emission from the soil grown with winter wheat was studied with the technique of static chamber.

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  • 储存另一在燃料中放点东西增加分子能够附着表面总面积

    Another way to store hydrogen is to put something inside the tank which increases the total internal surface area to which the molecules of the gas can cling.

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  • 大约1885年,天然气加热烘焙、以空气作为唯一媒介工艺就已经被开发了这种工艺至今仍是最好普及咖啡烘焙

    About 1885, a process by which natural gas heats a roasting chamber and hot air is the only heating medium was developed, and this remains the best and most popular method of roasting coffee.

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  • 结合条函数提出薄壁剪力效应计算样条里兹

    The spline Ritz method was proposed and used to analyse the shear lag effect of box girders.

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  • 空调器测试台空气接收混合设计湿球温度测量准确度直接影响测试精度。

    Design of air mixture receive box and measuring accuracy wet-bulb temperature affect the measuring accuracy directly in air enthalpy difference test system.

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  • 应用单一拉格朗日水平放置、位于不同密度理想流体层间矩形薄板变形应力问题进行研究。

    With the single Lagrangian method, deformation and stress of a rectangular thin plate in different density ideal fluids in a tank placed horizontally were studied.

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  • 提出一种基于MATLAB的圆度评定利用MATLAB优化工具,为采用最小区域、最小二乘圆、最小外接圆最大内接圆实现圆度的评定提供新的选择

    By using MATLAB optimization toolbox, the method has supplied a new selection to assess roundness with taking MZC, LSC, MCC and MIC as its reference circle.

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  • 采用窗函数频率抽样切比雪夫最佳一致逼近,通过调用Matlab信号处理工具中的函数设计数字滤波器

    By using MATLAB signal and using window method, frequency sampling and Chebyshev approximation the design of low pass digital filter in the toolbox have been processed.

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  • 根据连续介质力学组合力学行为特点,建立考虑滑移影响的空间非线性组合有限元

    Based on the behaviour characteristics of composite box beams, a new triaxial nonlinear finite element for composite box beams with slip effect is presented.

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  • 薄壁梁结构模糊分析数值计算理论进行深入研究,提出了基于一维离散有限元薄壁模糊分析理论。

    The numerical methods of fuzzy analysis for thin-walled box girders are studied systematically, the one-dimensional fuzzy finite element method for thin-walled box girders is proposed.

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  • 本文利用变分有限元函数,提出了薄壁结构分析数值理论和

    This dissertation establishes numerical methods in structural analysis on the basic of variation principle, finite member element method, spline function, etc.

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  • 本文在以往研究基础上,从理论进一步分析了形断面桥墩抗震性能部分内填混凝土补强效果

    The paper studied the seismic performance of steel box bridge pier and the strengthening effect of partially concrete-filled strengthening method using finite element method.

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  • 三角形分析比较具有形象直观易于理解特点能够迅速准确确定行星变速功率流大小流向

    Compared with the triangle method, the new way has the traits of visualizing, intuition, easy understanding, swift and nicety to determine the power currents and its direction of the planet gear box.

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  • 薄壁扁平正交异性板钢桥面第二体系应力计算主要P -E等效格子有限元等。

    There are mainly three methods in the second system stress analysis of the orthotropic steel deck, P-E method, the equivalent girder beam method and the FEM.

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  • 为此本文阐述了跨度预拱确定——逆迭代深圳会展中心形梁实例说明计算过程

    Therefore, the paper expatiates counter-arched method of long span box beam-iteration, and the process of counter-arched calculation of Shenzhen conference and exhibition center.

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  • 本文介绍了广义坐标推导的梯形截面约束扭转计算的基本微分方程

    Using the generalized coordinates method, fundamental equations for the restrained-torsion of thin-walled box girders of trapezoidal cross section are derived.

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  • 基于换算截面运用变分原理对开裂混凝土连续剪力效应进行了分析,规范试验结果进行了对比

    Based on transformed section method, shear lag effect of continuous box girder was analyzed adopting variational principle, and compared with design code and experimental result.

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  • 短线节段预制拼装桥梁施工技术国外应用较多,在我国近年来也应用。

    The construction technique of box girder precast segment assembling by short-line method has been applied abroad, while applied in China in recent years.

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  • 有限元能量变分预应力活性粉末混凝土简支剪力滞效应进行研究。

    The shear-lag effect on the prestressed RPC simply-supported box girder is studied by FEA method and energy variation method.

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  • 采用样条有限截面内力塑性系数薄壁曲线塑性问题进行了求解。

    The elastic and plastic problem of thin-walled curved box girders is solved with the spline finite point method and the section internal force plastics coefficient method.

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  • 根据弹塑性有限变形理论有限元建立卫星推进系统金属膜片变形有限元分析模型

    According to the deformation of elastic-plastic theory, the finite element analysis model of metal diaphragm for tank of propulsion system in satellite was established in this paper.

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  • 该文介绍墩台截面横隔计算简化与较精确梁格计算结果进行比较。

    The paper introduces the simplified calculation method of diaphragm beam section of box beam at piers and abutments.

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  • 对上德立交桥中的异形通过不同以及试验进行分析计算,详细地说明异形梁设计常常使用梁格的适用情况和实际的效果。

    Comparing the results of one irregular box beam obtained by the gridiron method to that by FEM, the characteristics of the application scope, merits and drawbacks of the gridiron method are convinced.

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  • 对上德立交桥中的异形通过不同以及试验进行分析计算,详细地说明异形梁设计常常使用梁格的适用情况和实际的效果。

    Comparing the results of one irregular box beam obtained by the gridiron method to that by FEM, the characteristics of the application scope, merits and drawbacks of the gridiron method are convinced.

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