查询词典 projection gradient method

This paper introduces the application of the induced polarization method in a copper mine of Tibet,uses the IP intermediate gradient and DC IP sounding to select three electricity unusual points,extrapolates the characteristics of its source and the polarized object through the IP characteristics and the electricity characteristics of the rocks .

本文阐述了激发极化法在西藏某地铜矿矿区的应用，通过在测区进行直流激电中梯和直流激电测深工作，圈定了铜矿区三个激电异常，结合工区的岩矿石的电性和激电特性，对其场源性质和极化体特征进行了推断和解释，从物探勘测角度对测区作出评价，为进一步开展地质工作提供依据。

For the determination of five carbamate pesticide residues by high performance liquid chromatography with gel permeation chromatography purification, sample was extracted with acetonitrile and purified with gel permeation chromatography. Methanol-water was used as the mobile phase by gradient elution, flow rate of 1.0mL/min, using a fluorescence detector and quantitating with external standard method.

凝胶渗透色谱-液相色谱法测定5种氨基甲酸酯类农药残留中，实验采用乙腈提取，凝胶渗透色谱柱对样品进行净化，以甲醇-水为流动相，进行梯度洗脱，流速1.0mL／min，荧光检测器检测，外标定量测定。

An alternative method to derive a set of fully nonlinear Boussinesq equations up to the order of $O(\mu^{2}$,$\varepsilon^3 \mu^{2})$ is presented. The linear dispersion relation and the shoaling gradient of the equations are improved by adding some dispersive terms.

从欧拉方程出发，提供了另一种推导完全非线性Boussinesq方程的方法，并对方程的线性色散关系和线性变浅率进行了改进。

The results showed that plenty of the purified DPV virions were obtained after the cell lysate was condensed by 5-fold by ultrafiltration,and the concentrated DPV fluid was ultracentrifuged with 300g/L sucrose cushion method and 300-600g/kg sucrose density gradient centrifugation methods.

结果显示，用切向超滤法将病毒培养物浓缩为原体积的1/5后，再采用300g/L蔗糖垫底超速离心和300～600g/kg蔗糖密度梯度离心的方法进行纯化，可获得大量的纯化病毒粒子。

An optimum design for the complex body formed together with the volute casing, base ring and cement foundation of a hydraulic turbine is made by the gradient method and a program is developed on the basis of finite element analysis with the plane and shell element, body element, boundary element and pseudo element.

本文对由水轮机蜗壳、座环和水泥基础所构成的复杂组合体，在采用板壳元、块体元、边界元和伪单元等四类单元进行有限元分析的基础上，选用最速下降法研究了优化设计过程，并编制成程序系统。

An application of conjugate gradient method to fit concrete creep coefficient is in good agreement with experimental results. 4. There are 8 CFST members bearing capacity tests with different initial stress factor and eccentric distances having been launched. 5. A generalized analysis program which could be considered steel tube initial stress influence of CFST arch bridge is developed. The correct and accuracy of the program were verified by the experimental results of the axis, eccentric compression initial stress CFST member and a model of CFST arch bridge.

应用共轭斜量法拟合混凝土徐变系数，拟合结果与试验值吻合良好； 4、开展了8根不同初应力系数和偏心距的钢管混凝土初应力构件承载力试验； 5、编制了钢管混凝土拱桥考虑钢管初应力影响的综合分析程序，程序得到轴心受压、偏心受压初应力试验构件和模型拱桥的验证。

According to contraction theory, this algorithm is based on gradient descent method, which adopts linear average as performance evaluation of value function. So the iterative process of value function becomes a convergent process to a fixed value.

该算法基于梯度下降法，根据压缩映射原理，通过采用线性平均法作为值函数估计的性能衡量标准，把值函数估计的迭代过程转化为一个收敛于不动点的过程。

The metabolic rule of the density of equivalent of fluid of artesian well of well key point that designs method and double gradient according to structure of traditional well body, derivation gives the computational formula that deepness enters below bushing.

根据传统井身结构设计方法和双梯度的井眼钻井液当量密度的变化规律，推导出套管下入深度的计算公式。

In order to improve the efficiency, an implementing scheme (according to the distribution of strain energy density) was suggested when to consider the fact that the high gradient usually appears only in a very local region, especially in the case of huge amount of computation. All programming has been finished on the platform of commercial codes Mathmatica and Fortran.4. A number of numerical examples and applications were presented to verify the proposed Bezier-Based Element Method. The engineering cases include: the belt die for diamond synthesize, the main frame of wire-rounded press, the hydraulic cylinder of open die forging press. The numerical results show that the BBEM has some good performances.

通过大量的数值算例来考证所构建的各种类型单元，并应用于人造金刚石年轮模具、钢丝缠绕预应力机架和液压机工作缸等实际问题的结构分析；结果表明：所构建的Bezier耦合单元具有描述较大梯度变化场(如位移场、应力应变场等)的能力，该方法不改变单元的大小和形状，保持单元的自由度数不变，而通过调节中间可动节点的位置改变单元内部的场分布，只需少量单元即可较精确地模拟较大的梯度变化；可为有效求解高梯度问题提供新思路，对实际工程应用具有重要意义。

Therefore, it is very important to study on high nitrogen content diamond synthesis in HPHT condition.In this study, we use a cubic anvil HPHT apparatus. Using catalysts, graphite and addition of NaN3, large green single crystal diamond with high nitrogen concentration is firstly synthesized by temperature gradient method.

本文使用国产六面项压机，首次用不同触媒(FeNiMnCo、FeNiCo)+C+不同比例的添加剂NaN3合成出具有完整晶型的优质深绿色高氮含量宝石级金刚石单晶，研究了NaN3对宝石级金刚石中氮含量及生长行为的影响。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。