查询词典 sliding friction

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

The study revealed that the lithology layer is the most important factor of geological environment for controlling landslide distribution, and ＂Easy Sliding＂ index-ES and ＂Regional Easy Sliding＂ index-RES are proposed to illustrate the capacity of landslide development in each litho logic layer.

滑坡分布特征揭示地层是控制三峡水库区中前段滑坡发育的最重要的地质环境因素。

Slick UI Using Skins and Sliding Trays - This application shows you how to give your apps a skinned interface with sliding trays, the ability to drag the form and have all the trays stay "attached" to the form and also how to change the shape of some common controls like textbox and listbox...

这个程序向你展示了如何给你的应用程序增加一个带有滑动盘的换肤界面，绘制表格的能力以及所有的附带的盘到表格中，还有如何改变一些常用控件的形状等等。

Motivated by the i dea o f t he v ariable-structure c ontrol, t he c onception o f a pproaching region and leaving region of the switching boundary is developed. The sufficient conditions of whether sliding mode occurs or not on the switching boundary are obtained. Under the assumption of the switching delay time being positive, the sufficient conditions of quasi-sliding-mode occurring on the switching boundary are given.

受变结构控制思想的启发，提出切换线的趋近域和远离域的概念，进而得出系统在切换线上是否会发生滑动模态的充分条件。

Based on the sliding response theory of the free-standing equipment, the differential equation of motion of the free-standing equipment under seismic excitations is presented. The equation is solved by Runge-Kutta algorithm, therefore the absolute acceleration, relative velocity and relative displacement of the equipment can be obtained. The sequential coulomb friction model is applied to the analysis.

以前人研究建立的浮放设备滑移反应分析理论为基础，给出了浮放设备在水平和竖向地震输入下滑移反应运动微分方程，选取连续型的库仑摩擦力模型，采用Runge-Kutta法求解浮放设备地震滑移反应运动微分方程，可以得到浮放设备在地震作用下的绝对加速度、相对速度和相对位移反应时程。

Apart from these, another conclusion was drown by the author that the increase of surface energy due to the deformation after the adhesion shearing at the asperities and the viscoelasticity of polymer films is the main reason why the friction coefficients of polymer films vary with the sliding speed.

还有一条重要研究结果是，作者认为，由于聚合物薄膜受摩擦作用而发生变形以及由于聚合物的粘弹性造成变形回复的滞后而造成聚合物表面能的增大，是聚合物摩擦副的摩擦系数随相对滑动速度的变化而变化的根本内因。

Furthermore, the larger the atomic lattice, the smaller the sliding friction coefficient is.

滑动摩擦系数随晶格常数的增加而降低，而当晶格常数较大时，其变化对滑动摩擦系数影响较小。

Further study of this paper has shown that reason for"camel peak"phenomenon in the adhesion-creep test curves is difference between sliding-and static coefficient of friction and discussed the analytic formulae for line contact as well as one direction slip and special correction Lemk's method for point contact when their change is considered as stage jump function.

通过进一步的理论研究指出造成轮/轨粘着率与弹性滑移率实验曲线呈"驼峰"状的原因是滑动区和粘着区的动、静摩擦系数变化，给出了当它们为阶跃变化时线接触条件下的解析解和对点接触情况的独特的"修正"Lemke算法。

The paper implements a study about some factors having influences on the bending behavior of externally prestressed concrete simple supported bridges .these factors include the change of PPR、 the change of match tendon rate、 the change of static friction coefficient and the sliding one, the reasonably scope of these parameters value is given.

4以整体施工的体外预应力简支梁为研究对象，利用自编程序就预应力度、截面配筋及转向块与体外筋的相对滑动等参数对体外预应力梁受弯性能的影响进行了分析研究，给出了这些参数的合理取值范围。

It is found that the friction coefficient increases with the increase of sliding velocity, and there is critical velocity.

试验发现，摩擦系数随滑动速度的增加而增加，存在临界滑动速度。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A: I hear Mr. White wants to run for the Presidency!

我听说怀特先生要参加总统竞选！