A highly unstable radioactive element ( the heaviest of the halogen series); a decay product of uranium and thorium. 一种极不稳定的放射性元素(卤素系列中最重的一种),铀和钍腐烂的产物。
High tune-pattern in Nanxi Opera Edition of Tai Ping Chun: Its Discovery and Outline; Numerical calculation of mode-fields of the spherical plano-convex unstable resonator with Gaussian reflectivity mirror by means of the finite element method 南戏高腔本《太平春》的发现及其概貌高斯镜平凸非稳腔本征模场的有限元数值计算
Numerical calculation of mode-fields of the spherical plano-convex unstable resonator with Gaussian reflectivity mirror by means of the finite element method 高斯镜平凸非稳腔本征模场的有限元数值计算
In that case we introduced an unstable super heavy element into their sun's nuclear reaction. 我们再在太阳核子反应中传入了大量不稳定的因素。
The boundary integral equation was established based on the basic solution of two dimensional unstable heat transfer differential equation. With boundary element method, the unsteady state heat transfer criterion K u τ between air and rock wall was calculated. 利用二维不稳定导热方程的时间相关基本解建立边界积分方程,用边界单元法计算风流与围岩不稳定换热准数。
Analysis on Unstable Pressure Dynamic of a Dual Medium Reservoir of Random Shape by Boundary Element Method 用边界元法对双重介质油藏压力不稳定动态进行分析
Investigation of Biomechanics Behavior in Unstable Pertrochanteric Fracture Treated with Three Types of Nails by 3D Finite Element Analysis 三种典型固定钉固定不稳定股骨转子间骨折生物力学特征的三维有限元分析
Unstable result, is obtained when the boundary problem of wave equation is solved using finite element method in time domain. 在时间域应用有限元法求解波动方程边值问题,存在不稳定的缺点。
The emulation analysis of unstable temperature and creep stress fields of the difference work conditions that cause cracks are carried out in using 3D and 2D nonlinear finite element method. 对可能导致裂缝的几种工况,本文应用三维和二维非线性有限元分别对其进行不稳定温度场和徐变应力场的仿真分析。
Analysis of Modified Anterior Plate Instrumentation for Unstable Cervical Spine By Finite Element Method 颈前路蝶型钢板的有限元法分析
Fixation of unstable cervical spine using modified anterior plate instrumentation: an assessment by finite element method 应用有限方法评价颈前路蝶型钢板的力学性能
Basic equations about stable and unstable chemical field are derived from convective-diffusion equation of the ion reviewed. Then finite element forms of chemical field are obtained by the weighted residual method. 通过离子的对流-扩散方程,推出稳定场和非稳定场情况下的基本方程和边界条件,并由加权余值法得到了相应的有限元形式。
Problem of Unstable status, nonlinear process and phase transition in drilling bores with laser on carbon steel was solved by using method of finite element analysis. 利用有限元法,分析并解决了建立碳钢激光打微孔中热源模型的难题:非稳态问题、非线性问题及相变问题。