查询词典 simulation test

For pressure drop reduction and collecting efficiency incretion of the air filter, using computational fluid dynamics simulation technology and combineing with the way of experimental test, particles trajectories and distribution rate of deposition in air filters were calculated simulatively, the position where the particles reside easily was obtained.

为提高空气滤清器的减阻增效，采用计算流体力学模拟技术，结合实验测试的方法，模拟计算颗粒在空气滤清器中的运动轨迹和颗粒在滤清器中沉积的分布率，得出颗粒在滤清器中容易沉积的部位。

Through simulation of the real process of thomcolumbar burst fracture and use of modem dynamics techniques, the present study was (1) to investigate the kinetic relationship between structural damage and impact energy absorption and dynamics mechanism of thoracolumbar burst fracture by quantitative analysis of various injured segments;(2) to explore the instability mechanism of L1 vertebral burst fracture and its injury threshold by three-dimensional analysis of the injured segment with stereophotogrammetry in combination of transient physical parameters, anatomy and image;(3) to explore the corresponding relationships between impact energy, geometry parameters and biomechanics by geometry and biomechanical analysis of thoracolumbar burst fracture, which may provide an objective standard for evaluation of spinal injury severity and experimental evidence for adoption of biomechanical treatment in clinic;(4) to evaluate the fixation effect of different instruments and the effect of intervertebral bone graft on segment fixation by analysis of the threedimensional stability of different internal fixation instruments and their decompression of the spinal canal, which may provide experimental evidence for therapeutical selection for thoracolumbar burst fracture in future; and finally to investigate the effect of various instrument fixation on dynamical characteristics by comparison and quantitative analysis of frequency and amplitude responses, which may provide certain theories and experimental evidence for application of vibration test to judge the stability of the spine.

本研究从胸腰段脊柱爆裂骨折发生的实际过程出发，以现代动力学检测及计算机多通道高性能数据采集分析系统等高新技术为基础，实时量化分析损伤节段的工程参数，揭示了结构破坏与能量吸收的变化规律，探讨了胸腰段脊柱爆裂骨折的瞬态损伤机制；利用三维立体摄像技术，对不同损伤程度的节段进行三维运动分析，结合瞬态物理参数、影像学和病理解剖，明确了〓椎体爆裂骨折的失稳机制及损伤阈值；通过对胸腰椎爆裂骨折的几何学变化及生物力学分析，明确了撞击能量与几何参数、几何参数与生物力学的相应关系，为评判脊柱损伤程度提供了客观标准，为治疗中采取适宜的生物力学方法提供了实验依据；通过对比分析不同内固定器械的三维稳定性和对椎管的减压作用，评价不同器械的复位固定作用，同时比较椎体间植骨对节段固定作用的影响，为今后临床胸腰段脊柱爆裂骨折的治疗选择提供依据；利用振动测试与分析技术，比较及量化分析了不同致伤状况的频幅响应特征，比较分析了各种器械固定对动力学特性的影响，为今后临床建立基于振动测试与分析技术判断脊柱稳定性的诊断方法，提供了一定的理论和实验依据。

Within the limits of products' utilization continuity demand in the condition of unimproving original parts manufacturing precision and unchanged original assembly method, a standard test system is designed, which established by the principle of the simulation quantity transferability. The system can be used in assembling and checkout. The system is put into effect in the production to meet the requirements of parts' interchangeability.

在飞行准备阶段，地面操作人员可以通过任务计划地面站将任务数据加载到DTC中；在飞行初始化阶段，飞行员将DTC插入座舱中的安装架后，即可将其中的计划数据通过DTU加载到各航空电子子系统中；在飞行中，DTC可以根据DTU发来的指令和数据，按事件记录数据；在飞行后，地面操作人员可以通过任务计划地面站处理DTC在飞行过程中所记录的数据。

And considering the uncertain factors that the system may meet during the operation, a H robust control algorithm is employed when devise the controller of the system to compensate disturbances and unmodeled factors of the system. Finally, simulation and experiments are done to test the systems robustness and performance.

鉴于系统工作过程中存在的各种不确定性因素，系统控制器的设计采用了H_∞鲁棒控制算法，以抑制系统的外界扰动以及被控对象的模型不确定性，并进行了系统仿真和试验台试验研究。

To solve the practical problem where the temperature field distribution is low at the lower part of furnace chamber and high at the upper part and the temperature difference is untolerable , which is reflected by the thermocouples at site, the authors take the methods of multipoint test and computer hologram simulation to research into the fields in the furnace chamber of the zinc fractionating tower at Shaoguan Smelter CNNC.

针对锌精馏炉炉膛各检测点反映出的其上部温度偏高，下部温度偏低，上下温度偏差过大的实际问题，采用现场多点温度测试，结合炉膛内流场、浓度场、释热场和温度场数值仿真的方法对韶关冶炼厂二精馏系统进行研究；利用仿真结果中的流场扣浓度场数据，统计出实测中无法得到的各次空气和煤气在南1号至南4号各喷口的流量。

On the basis of model test, a 3 D numerical simulation on the flow field of low waterhead and big discharge riverbed hydroelectric station was made by adopting k-ε turbulence model and VOF method.

在1∶100水工模型试验的基础上，应用k-ε流数值模型，采用VOF方法，对低水头大流量河床式电站大坝泄洪流场进行了三维数值模拟。

The traditional design methods based on inertial brake dynamic test center can no longer adapt to high development technology, and leave too much to be desired for the requirement of modern plane designing, so a full system digital simulation design scheme on aeronautic wheel braking system is proposed in this paper.

由于航空工业的发展对防滑刹车系统的要求越来越高，原有的以惯性台刹车动力试验为基础的设计手段已与现代的高科技术不相适应，远不能满足现时飞机的设计要求，因此本文提出了航空机轮刹车系统全数字化仿真设计方案。

Breaking occurred in shell bottom in FE simulation of one step hot drawing forming cambered shell,which has been proved in test of forming.

采用有限元模拟曲面壳体一次热拉深成形，壳体底部出现断裂，成形试验也与模拟结果一致。

On the basis of experimental research,through compartmentalizing experimental beams into plenty of tiny cell,according to constitutive equation of each materials including steel bar,concrete,CFRP, this paper presents numerical simulation study of flexural all course of RC beams strengthened with CFRP, the theoretical results agree closely with those of the test.

在试验研究的基础上，将CFRP加固钢筋混凝土梁划分为若干个微单元，根据组成CFRP加固钢筋混凝土梁各材料的本构关系，通过数值方法，实现了对碳纤维布加固钢筋混凝土梁受弯全过程的数值模拟，其计算结果与试验所测得的结果符合较好。

Simulation results of power flow in CEPRI 22-bus test system, which is separated into two islanded power networks, validate the effectiveness and practicality of the proposed model.

通过模拟中国电力科学研究院22节点测试系统解列为2个孤网运行时的潮流分布，验证了新模型的有效性和实用性。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。