With a phase grating located at Fourier frequency plane, optical image subtraction is obtained as a result of the coherent superposition of the zeroth and the first order of the diffracted light.
置一位相光栅于相干光学处理系统频谱平面，利用其零级与一级衍射光的相干迭加实现图象相减。
This paper discuss the locally topological structure of higher order singular point for the plane cubic system in the first critical case and give a criterion by the coefficients of polynomials.
讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
The locally topological structure of higher order singular point for the plane quartic system in the first critical case is discussed, and a criteria by the coefficients of polynomials is given.
讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
Based on the first-order shear deformation plate theory, axisymmetric governing buckling equations are derived for a functionally graded material circular plate subjected to in-plane pressure.
基于一阶剪切变形板理论，推导了功能梯度材料圆形板在边界面内均布压力作用下的轴对称屈曲方程。
The first order absorption boundary condition is applied to the outside boundary, which can avoid the error caused by the plane wave assumption.
在外边界上统一应用适合于人工源的一阶吸收边界条件来形成边值问题，可减小基于平面波假设造成的人为截断边界的影响。
The first order Taylor series expansion replaces the non-linear equation used in solving this plane, and thus simplifies the algorithm.
通过求解由一阶泰勒展开式得到的线性方程组，避免了为求解此平面而求解非线性方程组最小二乘解的过程，使算法简化。
You'll have to board a plane in order to be dazzled by the marble streets and red roofs of Dubrovnik, Croatia. By all means, first walk the city walls;
你得乘飞机才能到达杜布罗夫尼克旧城，杜布罗夫尼克旧城以及克罗地亚的大理石街道以及红色的屋顶会令你眼花缭乱。
You'll have to board a plane in order to be dazzled by the marble streets and red roofs of Dubrovnik, Croatia. By all means, first walk the city walls;
你得乘飞机才能到达杜布罗夫尼克旧城，杜布罗夫尼克旧城以及克罗地亚的大理石街道以及红色的屋顶会令你眼花缭乱。
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