查询词典 hashing method

The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations.

应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法，将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质，给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。

Measuring sound velocity in the air using stationary wave method is discussed in this paper,phase comparison method and Lissajous figure method both could determine the wave length of ultrasonic wave.

1引言在大学物理实验教学中，测量空气中的声速用传统的共鸣管方法和超声波方法。

In Chapter 4, a symmetric triangular partitioned secant method for solving large scale sparse unconstrained optimization problems is constructed, which is a combination of a secant method and a finite difference method, and depends on a consistent partition of the columns of the lower triangular part of the Hessian matrix; it reduces the number of gradient evaluations required by Powell and Toints algorithm (the indirect lower triangular substitution algorithm) by one at every iterative step.

此算法是基于稀疏Hesse阵的下三角部分的列的相容分划的基础上建立起来的，把割线法和有限差分法有机的结合在了一起，在每次迭代中，把由Powell和Toint的算法所需要的梯度赋值次数减少了一。

By comparison of MP and PM method, we can't simply evaluate which kind of method is superior or which kind of method calculates the ET0 value big, and we should consider different geography, the climatic conditions and lysimeter experimental result.

仅通过MP、PM公式的计算比较，不能简单地评定哪种公式最优或哪种公式计算ET0值大，应针对不同地理及气候条件，要经Lysimeter的实验结果才能进行率定比较。

Now, there are mainly two potential method under research in overseas, magnetic flux leakage method and nonlinear harmonics method.

目前，国外在进行两种机械损伤在线检测技术的研究：漏磁机械损伤在线检测技术和非线性谐波在线检测技术。

By comparing the common edge detection algorithms, the magniloquent Kirsch edge detection algorithm is selected to process the result of background subtraction. The result of edge detection is denoised by mathematical morphology method. Shadow edge restrained arithmetic and detection-line-based background updating method are presented. Shadow edge restrained arithmetic reduces vehicle shadow edge efficaciously. Background updating precision is improved by presented background updating method.

在处理过程中，对常用的背景差方法进行了改进，有效的保留了车辆目标信息；通过对常用的边缘检测方法比较，选用了突出边缘的Kirsch边缘检测方法对背景差后的图像进行了边缘检测；使用形态除噪算法对边缘检测的结果进行了噪声去除；提出了阴影边缘去除算法和基于检测线的背景更新方法，阴影边缘去除算法有效的抑制了车辆阴影边缘，背景更新方法则提高了背景更新的精度。

Some methods, such as hydrothermal method, sol-gel method and pulse laser deposition method, have been developed to prepare manganite nanomaterials. Studies on the nanoscaled manganites revealed that they exhibit a number of novel physical properties such as low field high magnetoresistance, superparamagnetism, and large coercivity and more promising applications as compared to the corresponding bulk compounds.

发展了低温水热法、溶胶凝胶法、脉冲激光沉积模板法等方法制备锰氧化物纳米材料，研究发现纳米级的锰氧化物表现出了一些不同于块材的奇特的物理性质：如低场高磁阻效应、超顺磁性、大矫顽力、低饱和磁化强度及表面自旋玻璃等。

Based on the characters of singularity detection of signals of wavelet edge detection, this method is successful not only to detect the DNB, CHF and T〓, but to quantify and locate them. 6. Based on mapping theorem, a new numerical method—artificial neural networks numerical method is developed creatively.

五、通过利用边缘检测小波对信号奇异性的检测特性，实现了小波边缘检测方法在两相流动实验分析中的应用，将其推广应用到对气液两相流动的DNB、CHF和T〓等特性点的检测、定位和定量分析上，并获得成功。

The compaction effect of geogrid with marlite method, soil bag with marlite method, replaced backfilling clay method, which were used in the swelling rock slope of the Luwangfen test Region of middle-route of South-to-North Water Transfer Project were studied on the different conditions.

比选、研究了在不同碾压机具、铺土层厚、碾压遍数等条件下，土工格栅＋泥灰岩开挖料、换填黏性土料、土工袋+泥灰岩开挖料等三种不同处理措施的压实效果。

The optimal design of layout programming of RRMS is explored. The mathematical programming model based on matroid is established and the greedy method is selected serving as the optimal method. The application program based on this method is also developed and compiled.

摘 要：研究探索了快速可重组制造系统布局规划中的优化设计问题，建立了基于拟阵的数学规划模型，通过对比选取贪馋算法作为优化算法，并编制开发了此算法的应用程序。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。