1) Second-order Differential Power Analysis(SODPA)
二阶差分能量分析
2) the second-order difference of clusters energies
二阶能量差分
3) second difference
二阶差分
1.
Phase unwrapping algorithm based on minimum second difference;
基于最小二阶差分的相展开方法
2.
Weighted minimum cost flow phase unwrapping algorithm based on second difference;
基于二阶差分的加权最小费用流相位展开算法
4) second-order analysis
二阶分析
1.
This paper describes the part for second-order analysis provid.
本文详述了这一规范在细长框架使用二阶分析设计方面的特点,设计中不需要对弯曲屈曲假定计算长度。
2.
An analysis of steel frame structures is performed by use of the first-order analysis, the second-order analysis and the approximate second-order analysis recommended in the revised edition of "Chinese Standard for Steel Structure Design (GBJ17-88)".
对钢框架结构进行了一阶分析、二阶分析以及按《钢结构设计规范》(GBJ17— 88)修订稿推荐的近似二阶分析 ,通过对不同分析方法的计算对比 ,得出了钢框架结构分析考虑二阶效应的某些一般性结论 。
3.
A continuous parallel model is taken as the computational model for the second-order analysis of tall frame -shear wall structures with varied sections, considering the floor slab deformation by use of the piecewise technique.
对考虑楼板变形的变截面框－剪结构的二阶分析问题建立了一个分段连续化的串并联模型，导出其二阶分析的微分方程组，用常微分方程求解器求解。
5) second order analysis
二阶分析
1.
Based on the differential equation of large deform theory and small deform theory, respectively, this paper establishes the second order analysis styles of elastic steel beam column under the fire condition, which are based on the subjunctive load method.
基于小挠度理论和大挠度理论的基本微分方程,利用虚拟载荷法分别建立了弹性钢构件(梁、柱)在火灾条件下的二阶分析格式。
2.
To develop a practical approach of second order analysis for space mega-steel frames,a three dimensional equivalent model with solid members for the space mega-steel frame structure is established according to continuous concept and stiffness equivalent principle,and the stiffness equation of second order analysis for the model is proposed.
为了探讨巨型空间钢框架结构二阶分析的实用方法,从简化结构的计算模型入手,采用连续化概念和刚度等效原则,将立体格构式巨型构件等效为三维实腹式构件,在对巨型梁柱的节点域进行等效后获得巨型钢框架结构的三维等效模型,据此建立结构的二阶分析刚度方程,并用数值算例检验了该方法的实用性与可靠性。
3.
In this paper, a second order analysis procedure is presented for the analysis of tube_in_tube structures.
本文提出了高层筒中筒结构的一种二阶分析方法。
补充资料：对称差分(n阶的)
对称差分(n阶的)
symmetric difference of order
对称差分(n阶的)l另11111州tric山ffer曰℃eof份der‘c“MMe邓一，ecK即pa3Hoc几“op，皿Kan」，一元实变函数f在点x上的 表达式 声/n、，.、。，/.n一Zk八 △口ffx，h)=)l:’1(一1)“f lx十二二~一竺二生h 1. 一‘““一””k饥戈k/、‘产“戈一2‘’/‘将h换成Zh，下面的表达式也称为对称差分: 息川(一1)*，‘二+、。一2、)。).假若f(x)在x有n阶导数厂时(x)，那么 △二f(x，h)=./戈n)(x)h”+o(h”). T .fl .J’IyKame皿。撰
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参考词条