查询词典 temperature gradient

The foundation for further studying the strain gradient theory and applying the strain gradient theory to the fracture mechanics can be given by the result of this paper.

本文的结果，为进一步研究应变梯度理论在断裂力学中的应用提供了良好的基础。

The results show that the average flow velocity increases with the flow discharge and the slope gradient in an exponential form,and the slope gradient has greater effect on velocity than discharge.

结果表明，坡面径流平均流速随坡度和流量的增加而增大，流速与坡度和流量之间存在指数函数关系，坡度对流速的影响大于流量。

Two approximations to gradient have been introduced to reduce the computational complexity of the gradient based edge detection algorithm.

为降低基于梯度的边界检测算法的复杂度，常使用两种梯度近似算法。

In this paper, some improvements have been made on the traditional gradient interpretation methods for the two-dimensional fault gravity anomalies:① The least squares fitting technique is adopted to figure out the dip angleαof the step;② The dip angle and the horizontal boundary of the step are directly used to calculate the burial depth of the step;③ the interpretation method for gravity two-dimensional gradient is extended to the interpretation of the complex fault model.

摘要对以往的二维断裂重力异常的梯度解释方法作了几点改进：①采用最小二乘拟合方法求取台阶倾角α；②直接利用台阶倾角与台阶的水平边界位置来计算台阶的埋深；③将重力二维梯度解释方法推广到复杂断裂模型的解释。

The purification method of the deoxyribonuclease comprises the following steps: drying fresh fruiting body of Ganoderma lucidum, pulverizing, extracting to obtain crude deoxyribonuclease, salting out with ammonium sulfate, carrying out affinity chromatography, gradient-eluting, carrying chromatography in SP Sephorose Fast Flow column, and gradient-eluting with 0 to 0.3 M NaCl to obtain seoxyribonuclease of Ganoderma lucidum.

该酶的提取纯化方法，以新鲜灵芝子实体为原料，经干燥处理后粉碎、粗酶抽提、硫酸铵盐析、亲和层析，梯度洗脱，再用SP Sephorose Fast Flow柱层析，以0～0.3M NaCl梯度洗脱，即可获得灵芝脱氧核糖核酸酶。

By defining a matrix function and introducing a free matrix U, the pole assignment constraint is relaxed, and the gradient σ2/U and σ2 σ2[V-1]/U are obtained. Thus robust design can be achieved by gradient method. Examples show that this method is very effective.

通过定义一矩阵函数并引入新的自由变量U，可放松极点配置的约束，并能系统的推导σ2/U及(σ2·σ2[V-1])/U，从而将鲁棒设计转化为无约束的梯度法寻优，实例说明，本文设计方法的效果很好。

The linear reconstruction approach using Green-Gauss gradient estimation is applied in order to obtain second order spatial accuracy. A new gradient estimation based on the weighted average of Barth and Jespersen's three point model limiter is employed to minimize the numerical oscillations around solution discontinuities.

利用格林－高斯公式对控制体内的变量进行线性重构，获得空间二阶精度，并采用Barth型限制器以抑制数值解的振荡。

Based on the acoustic absorption theory of microperforated panel and by the means of the theoretical analysis and emulation, the paper focuses on the acoustic characteristic including acoustic impedance, frequency and acoustic absorption coefficient of microperrforated panel working in the combustion chamber which has high temperature and great temperature gradient.

摘要根据微穿孔板吸声理论，采用理论分析和仿真的方法，着重讨论微穿孔板在温度梯度下的声阻抗、共振频率和吸声系数等声学特性，分析其受温度影响变化的机理。

BGHS;Base of Gas Hydrate Stability, we attached 5 miniature temperature probes to the outside walls of a sediment corer to measure the temperature and thermal gradient of sub-seafloor when taking a core sample.

为了能更准确的求得天然气水合物稳定生成的底部，即海床的地温梯度与天然气水合物稳定曲线的交点。我们将5根小型温度探针系绑於岩心采样器之外管壁上，在岩心采样时同时量取海床底下之温度。

Considering that the temperature gradient through thickness is much higher than that through width and length of plate, in this model, the governing equation of heat transfer was simplified as a one dimensional differential equation, and the series function solution for temperature is established in Lagrangian coordinate setting.

在该模型中，考虑到轧件厚度方向的温度梯度远大于沿宽度和长度方向的温度梯度，因而将热传导方程简化为一维微分方程，基于拉格朗日坐标建立了温度场的级数解法。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了