查询词典 pumping-back method

Lastly, a number of particle movement trajectories are simulated by Monte Carlo method, and the sediment concentration, siltation distribution in pumping station forebay are obtained.

蒙特卡罗方法的模拟结果十分形象直观。

Firstly, adopting the 3—D standard k-ε two equation model, the turbulent flow field in pumping station forebay is numerically solved by finite volume method and the technology of hybrid grid.

本文先采用三维标准k-ε紊流模型，运用控制容积法及混合网格生成技术，对泵站前池的水流运动作了模拟，得出泥沙运动计算所需的物理量。

Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,ChinaThe method of numerical simulation based on coordinate transformation and diffraction theory was adopted to analyze the beam characteristics of waveguide lasers with hard-edge unstable resonators.Output beam quality was investigated considering non-uniform pumping and gain saturation.

基于衍射理论和坐标变换，采用数值模拟的方法分析了硬边非稳腔平面波导激光器的光束特性，研究了存在非均匀抽运和增益饱和时，输出激光的光束质量。

It is based on nonlinear homotopic BP neural network with nonlinear normalization method to identify the oil pumping model, and the genetic algorithm to optimize the downtime.

利用非线性规范化方法的非线性同伦BP神经网络对采油模型进行辨识，采用遗传算法优化停机时间。

An implicit differential method for the wave equation of rod pumping system［J］.

有杆抽油系统预测模型的隐式差分法［J］。

The numberical simulation of sucker-rod pumping systems is a mathematical method based on wave eguation to analyse the behavior of the systems.

有杆抽油系统的数值模拟是以波动方程为基础研究系统工作动态的数学方法。

At first, a flexible mathematiical model describing pumping system and its numerical method is presented in this paper.

首先，本文描述了表示抽油系统的数学模型及其数值求解方法。

Studied pumping well system in this article, the intermediate power transmission parts uesed flexible rod, the downhole assembled rod pump, the ground driving device would transform up and down reciprocating motion into rotating motion. With own mechanism rounded trip for the downhole flexible rod and pump. Wellhead polished rod changed common stell for flexible polished rod. It was a innovation in theory study and craftwork method. It was a remarkable feature in this article, because these innovations were not studied and attempted for prehuman.

本文所研究的抽油系统，中间动力传动部件采用柔性抽油杆，井下配套杆式抽油泵，其地面驱动装置将传统抽油机驴头的上下往复运动变为旋转运动，并且能够利用自身结构对井下柔性抽油杆及泵体实现起下作业，井口光杆也由普通钢质光杆变为柔性光杆，这是理论研究和工艺方法的创新，这些创新都是前人所没有研究和尝试的，是本文的一大显著特点。

Therefore, as a pumping station on-site to monitor cavitation is an ideal method.

因此，作为泵站现场监视汽蚀是一种比较理想的方法。

This paper introduces the example of application of computer based supervisory control and protection system to large pumping station, analyses system structure and function and shows the effectiveness of this method.

文章介绍了计算机监控和微机保护系统在大型泵站中的应用实例，分析了系统结构和功能以及应用后的效果。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。