The effect of boundary conditions on computer simulating dislocation patterns of a fatigued copper single crystals was studied by using the method of discrete dislocation dynamics in two-dimensional system.
利用二维离散位错动力学方法,研究了边界条件对计算机模拟疲劳Cu单晶位错花样的影响,结果表明:边界条件在模拟位错花样这类多体问题时是非常重要的;在其它模拟机制均完全相同的情况下,不同边界条件会形成不同的模拟结果,自由空间边界条件是最简单、也是最不现实的边界条件,模拟结果与实验结果相差甚远;而一维最近邻周期性边界条件与二维近邻周期性边界条件的模拟结果基本相同,与Cu单晶早期疲劳位错花样的实验比较吻合。
During cyclic deformation, the dislocation pattern formed at the early stages and its evolution were simulated by using the method of discrete dislocation dynamics and observed with the electron channeling contract (ECC) technique in scanning electron microscopy (SEM) on a single-slip- oriented copper single crystals.
采用离散的位错动力学方法，用计算机模拟循环形变单滑移取向Ｃｕ单晶中疲劳早期位错花样的形成和演化过程，并利用扫描电镜电子通道衬度（ＳＥＭ—ＥＣＣ）技术对其进行了观察。
Introduce the steel and steel products of location and preparation of test pieces for mechanical testing;
钢及钢产品力学性能试验取样位置及试样制备标准探讨
From the Impact Value Temperature curve made from the test,the effect of specimen location ranging from the center to surface of coupon on impact value as well as the development of Ductile to Brittle Transition temperature ( t K ) used for analyzing the trend of brittle fracture,.
对热轧状态下的１６Ｍｎ厚板材料，在板厚的１８处，１４处，３８处和１２处取样，进行系列冲击试验，得出不同取样部位下的冲击值——温度变化曲线，取得从材料表层到心部的冲击值及冷脆转变温度的变化规律，为分析其脆断倾向提供了理论依据。
Objective:To investigate the characteristics of P3 like componentes of auditory ERPs(under brief:P3 like potentials) in normal rats and to study the changes of that in epileptic rats.
目的 :研究正常大鼠听觉事件相关电位 (ERP)的P3样波 (下简称听觉P3样电位 )特点及癫大鼠P3样电位变化。
Steel and steel products--Location and preparation of test pieces for mechanical testing
GB/T2975-1998钢及钢产品力学性能试验取样位置及试样制备
Collect water sample from the site where transect line runs into the sea.
在样条伸展入海的位置取海水样本。
sampling cross-section [station]
取样横截面[部位]
The position so calculated.
定位推算位置这样计算所得的位置
In the case of uranium the sample location or medium is not as critical.
分析铀时对取样点位置或介质的要求就不那么严格了。
position and velocity extraction
位置和速度抽取程序
The position played by such a player.
边锋位置这样的球员所处的位置
Such location-aware services challenge location transparency.
象这样的位置敏感服务挑战位置透明。
Whst are the different positions on volleyball?
排球在位置上怎样区分？
An instrument or a device, such as a tube or siphon, for taking samples of wine, for example.
取样管一种取样（如葡萄酒取样）的仪器或装置，如管或弯管
Same location as that of the user setting up the client computer
同用户设置客户端计算机的位置一样
If appropriate, old10 mm holes should be re-drilled to12 mm and the new bolt placed in the same position.
取出之后，应将原来10公厘的小洞钻为12公厘，再将新的锚栓设在同样的位置。
The property object type may take bits in the six low order positions.
属性对象类型可能在六个低序位位置上获取位。
sampling devices for analog oscilloscopes
用于模拟示波器取样装置
Simulation of a Sampling Equipment Based on AMESim
基于AMESim的一种取样装置的仿真
Fault Analysis of the Gas Sampling Device of BF and the Countermeasure Adopted
高炉煤气取样装置采样系统的故障分析及对策
Gets/Sets whether the search is performed backwards from the current position.
获取/设置搜索是否从当前位置向后执行。
Do you want to unlock size and position now?
是否立即取消对大小和位置的锁定?
