查询词典 numerical approach

Online tuning and relatively light calculation burden due to directly coefficient setting by formula extend this scheme to be used for fast-running process and mechanical equipment, numerical simulation over a wide range of system parameter variation shows that the recommended scheme is superior to both traditional PDF designed by Phelan's approach and relay feedback auto-tuning PID in terms of performance behavior .

大量的数值仿真试验表明，该自整定PDF控制方法具有良好的控制效果和在线调节性能，具有设计公式简单、相对计算量小的特点，能够应用于快速变化的过程和机械设备中。本文通过基于继电反馈的自整定PDF控制和基于Phelan法的PDF控制及基于继电反馈的自整定PID控制的比较研究，表明所提出的控制方法具有良好的控制效果。

In this paper. Based on the analysis of chemical process equipments , the virtual manufacturing architecture for the chemical process equipments were discussed. As an example , the digital modeling approach , numerical simulation , virtual design and virtual manufacturing environment for the spiral gas liquid separator were studied.

在分析化工过程装备特点基础上，对过程装备虚拟制造技术平台的体系结构进行了探讨，以典型过程装备螺旋片导流式气液分离器为例，对其数字化建模方法、数值仿真技术、虚拟设计和制造环境进行了研究。

The numerical results of water jet breaking rock agree with the experimental conclusion. A valid approach to the process of water jet breaking rock sh...

数值计算的结果较真实地反映了水射流破岩过程中岩石的动态响应以及水射流动力学特性的演化过程，并与相关试验规律吻合良好，这表明该分析方法是有效的，可用来指导高压水射流破岩理论的进一步研究及应用。

It is shown that the results based on this approach are in good agreement with the accurate numerical results. The propagation characteristics of metal-clad exponential index distribution waveguide are analyzed, too.

在外延生长过程中，采用微欠饱和母液回熔方法，提高了外延生长的重复性，解决了较大面积外延生长的表面质量问题，回熔厚度可控制在1μm左右，回熔表面平均平整度在30—200nm之间。

The best installed way and the efficiency of vanes was studied by the approach which associated with the numerical simulation and physics test in this paper.

本研究运用数值模拟和物理试验相结合的方法对导流板的最佳布置方式和导流效果进行了研究。

The best way to arrange vanes and the efficiency of diversion are researched by the approach which associated with the numerical simulation and physics test.

运用数值模拟和物理试验相结合的方法对导流板的最佳布置方式和导流效果进行研究。

Therefore, the calculated results from two numerical computation codes are in good agreement with those from field theory calculation. It has been proved that the applicability of this approach to mode separation research, by contrast, the tested results of mode frequency coming from the Model 2M214 magnetron (double-ring strappings) manufactured by LG Electronic Co.

对于LG 2M214型双环隔模带磁控管，模式分隔度的分析结果与韩国LG公司生产的磁控管实测结果相比较，预测误差仅为0.6%，能够与实际测试结果很好的相符合，预测精度足够高，从而证实了本方法在磁控管谐振系统模式频率分隔特性预测方面的可用性。

In the present study the convergent problems for the spheroids are investigated. The results show that our numerical method and the computer codes for the T-matrix approach are efficient.

我们研究了椭球粒子的收敛问题，结果表明我们的数值方法和T-矩阵计算程序是有效的。

Objective To simplify the structures of human upper extremity into a two rigid-body system by establishing a dynamic model based on a numerical equation approach.

目的 简化人体上肢结构，建立两刚体系统动力学模型，并对其进行数值求解。

An approach to numerical simulation is developed for fire-resistant design based on integral structures.

为基于整体结构的耐火设计提供了有效的数值模拟方法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。