1) approximation
[英][ə,prɔksɪ'meɪʃn] [美][ə'prɑksə'meʃən]
近似性
1.
On the fuzz of fuzzy mathmaties, we discusses some easy mixed definitions its clarification, stochastic and approximation.
针对模糊数学的模糊性 ,讨论了易于混淆的几个概念 :清晰性、随机性及近似性与模糊性之间的区别与联系 ,进一步明确了模糊性的客观普遍特性。
2) asymptotic approximation
渐近性近似
3) linear approximation
线性近似
1.
This paper compares the performance of three types of linear approximations for the dynamic security region of power system with network-reduction model.
分析比较了网络约化模型下电力系统动态安全域的3种线性近似方法的综合效能,分别为: 基于稳定域二次近似的动态安全域线性近似(Q线性近似)、基于稳定域线性近似的动态安全域线性近似(L线性近似)和基于稳定域边界法向量恒定假设的动态安全域近似(L0线性近似)。
2.
This paper presents a method to measure nonlinearity of the nonlinears models under the restricted condition and also presents a numerical standard for linear approximation acceptable curvature and bias.
测量数据处理中不同的非线性模型具有不同的非线性强度,从而使得一些非线性模型可以线性近似,而另一些选择适当的参数变换后可以线性近似,还有少数不能线性近似。
3.
Hamiltonian is derived in linear approximation for a three-dimensional anisotropic simple cubicdouble-sublattice Heisenberg ferrimagnetic model.
在线性近似下导出了三维各向异性的双子格简立方Heisenberg亚铁磁体模型的哈密顿量,采用矩阵格林函数运动方程技术,得到了自旋波的色散关系,并给出了零温时子晶格磁矩的解析表达式,数值计算结果表明,层间和层内耦合强度之比δ=J_/J对亚铁磁体的性质有着重要影响。
4) Nearly Compactness
近似紧性
1.
Nearly Compactness and Almost Compactness in Fuzzifying Topology;
不分明化拓扑中近似紧性和几乎紧性
5) Approximability
可近似性
6) distortionless enhancement by polarization transfer
近似对称性
1.
The structure of the title compound was identified by 1H , 13C, DEPT (distortionless enhancement by polarization transfer) and various two dimensional nuclear magnetic resonance spectroscopy, such as COSY (correlation spectroscopy), HSQC (heteronuclear correlation spectroscopy) and HMBC (heteronuclear multiple bond correlation spectroscopy).
94Hz的两个碳加以区分 ,解决了由于样品的近似对称性而导致几组谱峰难以归属的问
补充资料:近似连续性
近似连续性
approximate continuity
近似连续性【aPpro万mate continulty;..甲邢,砚ar~I.eupep‘.曰oc几] 连续性概念的一种推广,其中普通极限用近似极限(aPproximate limit)代替.函数f(x)称为在点x。是近似连续的(approximately continuous),是指 lim aPf(x)=f(x。)· X弓xo在最简单的情形,f(x)是n维Euclid空间上的实值函数(一般地,它是向量值函数).下面的定理成立.1)实值函数f(x)在集E上Lebesgue可测的充要条件是,f在E上几乎处处近似连续(见C代naHoB一Denjoy定理(Stepanov一Denjoy theorem)).2)对于任意的有界Lebesgue可测函数f(x),在它的每个近似连续点x。,下式成立: 。:去~lf(二)J;一f(二。), 两风R)穿‘”’一尸其中拜是n维Lebesgue测度,R是包含x。的非退化的n维线段,而p为它的直径.【补注】有关其他参考文献,见近似极限(approximatelimit).
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参考词条