查询词典 instantaneous velocity

By virtue of the instantaneous velocity of vehicles and precise time information supplied by GPS, a mathematic model can be established.

在利用GPS对车辆的定位与导航的基础上，进一步利用GPS提供的即时速度和准确的时间信息，通过数学建模，得到交通流量，平均车速，行程时间，车道占有率等一系列重要交通状况信息，以实现交通状况的实时检测，为城市交通管理系统智能化的实现提供必要保证。

Instantaneous velocity of the fluid-point is measured with LDA in the pipe reactor.

本文主要对管式反应器中流场特性和传质特性两方面进行了较深入的研究。

The flow field of free jet was measured by PIV. The instantaneous velocity vectors of the core region of jet was studied experimentally.

利用PIV技术测量了射流流场，得到了自由射流核心区的瞬时速度场，并对实验结果进行了分析总结。

The LDV instrument for instantaneous velocity measurement is developed which connected with the technology of optics, mechanics, electronics and computers designed.

并对仪器的光、机、电、算进行了总体设计，研制出适用于瞬态变速的激光多普勒测速仪。

These nonlinear coupled equations are solved by numerical method. First, by means of Simplex Method, searching out the instantaneous velocity of the center of mass of the crane, then all the other dynamic parameters are calculated.

方程组的求解，采用了离散数值解法，首先用直接搜索的单纯形法，解出起重机质心各瞬时的运动速度，进而计算出所有的动力参数。

With the increment of the gas flux, void wave main instantaneous velocity increases.

随着气相流量的增大，空隙率波主要瞬时波速增大，瞬时波速概率分布产生波状推进。

The significance of the standard with meteorological conditions, such as wind, including the instantaneous velocity at an average speed, 2 minutes, 10 minutes on average speed, the general weather forecast PuFu wind is 2 minutes?

气象意义的风具有标准条件，比如风速时距，包括瞬时风速、2分钟平均风速、10分钟平均风速，请问一般天气预报中的蒲福风力等级是2分钟的吗？

The main difficulties of SPIV measuremnts in turbomachines such as the laser light reflection and the dispersion of tracer particles were properly resolved in the experiment, and the instantaneous velocity distributions of several cross sections in the blade tip region were successfully measured at the design and near stall conditions, respectively.

在压气机SPIV测量中，激光反光的控制和示踪粒子的均匀稳定散播是决定成败的关键因素。

According to instantaneous velocity fields and vorticity fields measured with SPIV, detailed analysis of the evolution of tip leakage vortex at both design and near stall conditions is presented in this thesis and the different phases of the evolution of the tip leakage vortex, the formation, becoming unstable and the interaction between small-scale vortices and the mainstream can be clearly observed in the experiment results.

SPIV测量结果表明压气机转子叶尖泄漏涡在设计和近失速状态下均存在形成、发展壮大和失稳分裂的演化过程。

The characteristics of the variance of the instantaneous velocity for the incident vehicle were analyzed, and an algorithm of automated incident detection for freeway based on GPS was designed. A series of relative issues were also studied, including choice of sampling intervals, determination of detection thresholds, durative detection time and design of the alarm mechanism, etc. The validity and transplantability of the proposed AID algorithm were tested with field data and simulated data.

通过分析交通事件条件下车辆瞬时速度的变化特征，设计了1种基于GPS的高速公路交通事件自动检测算法，并对采样时间间隔的确定、检测阈值的确定、持续性检测时间的设定与报警机制设计等方法进行了研究，分别利用软件模拟数据和实测模拟数据对算法的有效性与可移植性进行了检验。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。