当自变量从x变到x+1时，函数y=y(x)一阶差分的差分 Δ(Δy(x))=Δ(y(x+1) - y(x))=Δy(x+1) - Δy(x) =(y(x+2) - y(x+1)) - (y(x+1) - y(x)) =y(x+2) - 2y(x+1) + y(x) 称为二阶差分。
... second order buckling 二次弯曲 second order difference 二阶差分 second order differential equation 二阶微分方程 ...
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... difference : 差异，差别，分歧，争论，差额，差分；微分的，差动的 zero difference : 零差异，无差异 second difference : 二阶差分 ...
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【二阶】英语怎么说_在线翻译_有道词典 ... 二阶差分 second order difference ; second difference ; second-or der difference ; kneepoint 二阶元素 divalent element 二阶金属 divalent metal ...
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In chapter 4, we analyze the differences of the bound by using the maximal absolute second difference of the control point sequence and the corresponding constant.
第四章详细分析了控制点的最大绝对二阶差分对界的影响。
参考来源 - 曲线与控制多边形之间偏差的界的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
其中一阶和二阶差分关联度能满足规范性要求，具有无量纲化后的保序性。
The first order and second order incidence degree formulae can satisfy the requirement of specification, and possess isotonicity after non-dimensional disposal.
把非线性薛定谔方程转化成二阶差分方程，通过迭代此差分方程得到透射谱。
The nonlinear Schrdinger equation leads to a second order nonlinear difference equation, and we obtain transmission spectrum of wave by iterating the difference equation.
第三章利用矩阵理论与重合度理论，讨论了一类非自共轭非线性二阶差分方程周期解的存在性问题。
Chapter 3 is centered around the existence of periodical solutions for non self-adjoint nonlinear second order difference equations by invoking matrix theory and coincide degree theory.
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