采用静态箱法对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.
利用烟箱法枪口烟雾测试系统,研究了钝感剂种类和用量对枪口烟雾的影响。
A new method to measure gun muzzle smoke is adopt to investigate the influence of some gun propellant deterrents.
利用防护热箱法和数值模拟方法得到了砌块热绝缘系数最大时的砌块的结构。
The parameter of the block is gained when its thermal resistance value is maximum by the guarded hot box and the numerical simulation.
采用实验热箱法,作者自行制作了两个实验热箱,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.
利用改进根箱法对玉米和花生根际生物进行了原位采样和观察。采用载玻片贴片方法直接采集到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.
用静态箱法对冬小麦不同基肥施用方式(表施、深施)和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排放通量的影响非常显著。
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.
储存氢的另一方法是在燃料箱中放点东西,增加氢分子能够附着的内表面总面积。
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.
大约1885年,用天然气加热烘焙箱、以热空气作为唯一的热媒介的工艺就已经被开发了,这种工艺至今仍是最好最普及的咖啡烘焙法。
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.
结合样条函数和里兹法提出薄壁箱形梁剪力滞效应计算的样条里兹法。
The spline Ritz method was proposed and used to analyse the shear lag effect of box girders.
空调器焓值法测试台中,空气接收混合箱的设计和湿球温度的测量准确度直接影响着测试精度。
Design of air mixture receive box and measuring accuracy wet-bulb temperature affect the measuring accuracy directly in air enthalpy difference test system.
应用单一拉格朗日法,对一水平放置贮液箱中、位于不同密度的理想流体层间的矩形薄板的变形、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.
提出一种基于MATLAB的圆度评定方法,利用MATLAB优化工具箱,为采用最小区域圆法、最小二乘圆法、最小外接圆法和最大内接圆法实现圆度的评定提供了新的选择。
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.
采用窗函数法、频率抽样法和切比雪夫最佳一致逼近法,通过调用Matlab信号处理工具箱中的函数设计低通数字滤波器。
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.
根据连续介质力学和组合箱梁力学行为的特点,建立考虑滑移影响的空间非线性组合箱梁梁段有限元法。
Based on the behaviour characteristics of composite box beams, a new triaxial nonlinear finite element for composite box beams with slip effect is presented.
对薄壁箱梁结构模糊分析的数值计算理论进行深入研究,提出了基于一维离散有限元法的薄壁箱梁模糊分析理论。
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.
本文利用变分有限元法、样条函数等,提出了薄壁箱梁结构分析的数值理论和方法。
This dissertation establishes numerical methods in structural analysis on the basic of variation principle, finite member element method, spline function, etc.
本文在以往研究的基础上,从理论进一步分析了钢箱形断面桥墩的抗震性能和部分内填混凝土补强法补强效果。
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.
与三角形分析法比较,该方法具有形象、直观、易于理解的特点,能够迅速、准确地确定行星变速箱的功率流大小及流向。
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.
薄壁钢扁平箱梁正交异性板钢桥面系第二体系应力的计算方法主要有P -E法、等效格子梁法和有限元法等。
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.
为此,本文阐述了大跨度箱形梁的预拱确定方法——逆迭代法,并以深圳会展中心箱形梁为实例说明计算过程。
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.
本文介绍了用广义坐标法推导的梯形截面箱梁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.
基于换算截面法,运用变分原理对开裂混凝土连续箱梁的剪力滞效应进行了分析,并与规范方法和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.
短线法箱梁节段预制拼装桥梁施工技术在国外应用较多,在我国近年来也有应用。
The construction technique of box girder precast segment assembling by short-line method has been applied abroad, while applied in China in recent years.
用有限元法和能量变分法对预应力活性粉末混凝土简支箱梁的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.
采用样条有限点法和截面内力塑性系数法对薄壁曲线箱梁的弹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.
根据弹塑性有限变形理论,用有限元法建立了卫星推进系统贮箱金属膜片变形的有限元分析模型。
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.
该文介绍了箱梁墩台截面处横隔梁计算的简化方法,并与较精确的梁格法计算结果进行比较。
The paper introduces the simplified calculation method of diaphragm beam section of box beam at piers and abutments.
对上德立交桥中的一联异形箱梁通过不同的方法以及试验进行分析和计算,详细地说明了异形箱梁设计中常常使用的梁格法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.
对上德立交桥中的一联异形箱梁通过不同的方法以及试验进行分析和计算,详细地说明了异形箱梁设计中常常使用的梁格法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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