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The algebraic surface fitting is implemented only by computing a generalized eigenvector, so this reconstruction method is computationally efficient.

代数曲面的拟合仅计算一个广义特征向量问题就可以完成，因此这种重建方法的计算效率较高。

In the process of radiation calculation in the real atmosphere, the exactly integrating over the zenith angle is computationally expensive, and thus the diffusivity factor is used to approximate to the integration over the zenith angle.

在大气辐射传输计算过程，对天顶角的精确积分非常费时，可以通过漫射因子近似方法进行简化处理。

Compared with Finite Element Method and Finite Difference Method, Boundary Integral Equation Method is computationally more efficient.

与有限元法和有限差分法相比，该方法具有更高的计算效率。

For the technically curious, we use a close approximation to a 'clothoid' spiral, which makes for a smooth ride while still being computationally inexpensive.

从技术角度讲，我们采用了接近于"回旋螺线"的设计在保证流畅驾驶的同时不增加运算量。

Extracting such motifs, either experimentally or computationally, is challenging because of their weak binding and high degree of degeneracy.

提取这种图案，无论是实验或计算，是挑战，因为他们的薄弱约束力和高度的退化。

It is seen through a canard configuration optimization for a three-surface transport that the proposed method is computationally efficient and prac- tical with the least modification to the current deterministic optimization process.

以三翼面运输机的前翼布局设计优化为例，证明该过程不需要对现有的确定性设计优化作修改，同时具有较高的计算效率，能满足工程应用要求。

Element-free Galerkin Method is a effective method for solving partial differential equations with the help of shape functions coming from moving least squares approximation. It is well-suited to problems involving large deformation and crack propagation etc on which Finite Element Method can not be used easily. But EFGM is computationally expensive and it is hard to impose the essential boundary condition. Coupling the EFGM and FEM can fetch up the defect of EFGM and improve the efficiency highly.

无网格伽辽金法是基于移动最小二乘法的一种用来求解偏微分方程非常有效的方法，在处理诸如高度大变形、裂纹动态扩展等有限元法较难解决的问题时有其独特的优势，但是存在处理边界条件复杂，计算量大的不足，将无网格法同有限元耦合可以解决这些缺点，极大的提高计算效率。

Using colour systems such as is computationally prohibitive, but in practice it is adequate to use a Euclidean distance metric in components coded nonlinearly according to video practice.

使用如CIE L*u*v*或 L*a*b*的色度系统，计算是不允许的。但实际上，依据视频实践，在R'G'B'分量非线性编码时，使用欧机里德距离度量是适当的。

This book is designed for a computationally intensive graduate course based around a collection of classical unsolved extremal problems for polynomials.

这本书是为集中的研究生课程在一次为多项式经典未解决的extremal 问题的收集周围基于的computationally 设计的。

The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

本文的方法研究和数据试验分析表明：基于三角网的线性插值法计算简单，速度快，但其网格化结果不光滑，精度不够；多元二次函数法计算简单，网格化精度高，效果良好，但它是基于全局计算的，计算速度较慢；最小曲率法计算速度快，网格化精度高，效果良好，但其在稀疏控制点的网格化容易出现振荡现象；普通克里格法网格化精度高，效果良好，但其计算量较大，一般计算速度慢；反插值法网格化计算稳定，速度快，精度高，效果好，而且在网格化方向不同的情况下其网格化精度效果都达到基本一致，适合于地球物理不规则分布数据的网格化，特别是大规模地球物理不规则分布数据的网格化。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。