查询词典 pseudo-osteomalacia

Researches of kinetics showed that adsorption of phenol by bamboo-charcoal can be dealt with pseudo first-order reaction.

竹炭作为一种新型吸附材料，在环境保护、医学和食品等领域具有广泛的应用前景[1-2]。

The decolorization reaction appears to be a pseudo first-order reaction and increases with rising temperature.

脱色反应可视为表观一级反应，提高反应温度可以加快脱色速率。

The kinetics for degradation of HCB by UV/Fenton oxidation conforms to pseudo first-order reaction equation.

UV辐射与Fenton氧化对HCB的降解具有协同效应。

The rational reaction mechanism of alkylation with PTC was proposed and the experiments show that the alkylation reaction is a pseudo first-order reaction.

由实验得到的反应动力学方程符合拟一级反应，提出了合理的反应机理。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory.

本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

A novel Pseudo-Random Frequency-Modulated pulse sequence used to fire ultrasonic transducer is put forward in this thesis.

本文提出了一种伪随机调频脉冲序列解决超声串扰的方法。

The number of fugues in a prelude varies from one to three, not counting the pseudo-fugal free sections.

在赋格曲的前奏数目不同2时59，不计算伪真菌无节。

To take Montaigne's fine image these are the frieze of grotesques around an unpainted portrait or in the spirit of the pseudo-Plationic letter the counterfeit of a book which cannot be written.

照蒙恬的妙喻，写成的作品是环绕一幅未画的画的异形饰带，或，按伪柏拉图书信的要旨，是无法书写之书的仿制品。

To take Montaigne's fine image, these are the frieze of grotesques around an unpainted portrait, or, in the spirit of the pseudo-Plationic letter, the counterfeit of a book which cannot be written.

照蒙田的妙喻，写成的作品是环绕一幅未画的画的异形饰带，或，按伪柏拉图书信的要旨，是无法书写之书的仿制品。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。