The delay in concluding the DDA negotiations is therefore a source of continuing concern.
在达成多哈回合谈判结论方面的拖延，正是外界持续担忧的根源。
Apply CPU of dual cores and advanced DDA curves and strait lines calculating method to assure better quality.
采用双核CPU技术和先进的DDA曲、直线插补算法，使加工的产品质量更好。
This paper USES Discontinuous Deformation Analysis (DDA) to analyse the dynamic stability of a rock slope slide.
本文用块体系统非连续变形分析(DDA)方法，对岩石滑坡体进行动态稳定分析。
DDA is used to analyze the destabilizing pattern of rock-anchored crane beam under the crane wheel pressing action.
目前，岩壁吊车梁设计所采用的刚体极限平衡设计方法还不能确切反映岩锚吊车梁的实际受力状态。
An approach for modeling rock crack propagation using discontinuous deformation analysis (DDA) method is presented.
提出一种用非连续变形分析方法模拟岩石裂纹扩展的方法。
Based on studying the way of polar moment of inertia, a new method of major and minor axis detecting by DDA was provided.
特征提取是葡萄干等级检测的基础，该文在研究极惯性矩计算长短轴方法的基础上，提出一种利用数值微分法进行长短轴检测的新方法。
FTIR result showed that it is the physisorption of the interaction among sodium sulfide, DDA and n-octanol with smithsonite's surface.
红外光谱研究表明，硫化钠、正辛醇、DDA与菱锌矿表面发生物理吸附。
Among all the numerical analysis methods, the Discontinuous Deformation analysis (DDA) method is an efficient method with high accuracy.
在解决岩土工程非连续变形问题的数值方法中，非连续变形分析方法(DDA)无疑是一种高效、精确的算法。
Detection of contacts between 3d blocks is a key problem in 3d DDA (discontinuous deformation analysis) and DEM (discrete element method) analysis.
在三维单元法、三维不连续变形分析法中，三维块体的接触判断是关键的问题之一。
In this paper, on the basis of several discontinuous deformation analysis methods, DDA (discontinuous deformation analysis) method was researched mainly.
本文在对各种非连续变形分析方法进行比较性介绍的基础上，选择其中的DDA方法进行了着重研究。
In addition, the numerical simulation of rock bolts to the reinforcement of rock slope in DDA shows an effective role in promoting the stability of rock slope.
另外，DDA方法关于边坡锚固模拟计算，充分反映和验证了锚杆在边坡稳定性加固处理中的效果。
Based on the discontinuous deformation analysis (DDA), the stability of the high rock slope behind the power house of Jiudianxia hydroelectric station was studied.
应用非连续变形分析(DDA)对九甸峡水电站厂房高岩体高边坡进行了稳定性分析研究，建立了DDA块体系统分析模型。
Abstract Based on three-dimensional DDA method, a simple three-dimension model was proposed to analyze rockbolting and the corresponding algorithm and formulas were given.
摘要：提出了三维非连续变形分析方法中锚杆的简化模型，给出了相应的算法和公式。
In this article, the Discrete Dipole Approximation (DDA) was used to calculate the extinction spectra of the gold and silver nanoparticles with the shape of sphere and cylinder.
本文采用离散偶极子近似理论，研究金、银两种金属的球形和棒状纳米粒子的消光光谱。
In this article, the Discrete Dipole Approximation (DDA) was used to calculate the extinction spectra of the gold and silver nanoparticles with the shape of sphere and cylinder.
本文采用离散偶极子近似理论，研究金、银两种金属的球形和棒状纳米粒子的消光光谱。
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