draw down curve是什么意思

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Analysis and advice for separator's pressure and liquid level control;

对油气分离器液面及压力控制的分析及改进

In this paper,the real annulus liquid level can be obtained by the material balance method used to reduce the gas displacement in the annulus.

物质平衡法通过测试环空中的气体排量折算出真实的环空液面 ,可以克服双频道回声仪所遇到的困难 ,为分析泵效、折算地层压力及区块注水补充地层能量提供依据。

This paper analyzed the change of the included angle between the liquid level of the liquid tanker and road under different driving modes.

分析了液罐车在不同行驶工况下液面相对路面夹角的变化，引出液面偏离角的概念及其确定方法，为提高液罐车的稳定性及其设计计算与校核提供了依据。

The level control system of flotation cells in a large-scale concentrator is analyzed and discussed in this paper.

对大型选矿厂浮选机液位控制系统进行了分析、探讨,针对原设计液面控制方法存在的缺陷进行改进,改进后的控制系统在投运后取得的数据,求出两种控制方法的传递函数,阐明了两者的优缺点, 并提出今后需要努力的方向,对从事选矿自动化的同行具有参考价值。

is the first company succeed applied iron water level apparatus in 750 m3 blast furnace in China.

宝钢集团上海一钢公司750m3高炉应用铁水液面监测仪对鱼雷罐的铁水液面进行监测,在国内率先取得成功。

In this paper the measurement method of fluid level by industrial TV images is introduced and discussed the practical running state of the method .

介绍了工业电视图像液面测量方法,并对实际应用中的情况进行了分析,对运行中需要注意的问题给予简单说明。

Contraposing the slow rapidity of closed-in pressure comeback,overtime of pore pressure test,great workload and high cost when carry through repeated off-take potential in low permeability gas field,on the basis of theory of gas reservoir engineering,the research concludes the simple method of calculation of present pore pressure,open flow potential and the position of well bore fluid level.

针对低渗透气田关井压力恢复缓慢、地层压力测试时间长,重复产能试井工作量大、成本高,井筒液面探测往往受到条件限制等问题,基于气藏工程理论,研究提出了计算气井当前地层压力和无阻流量、井筒液面位置的简易方法。

Study on Reverse Engineering System of the Product Profiles Based on Liquid;

一种基于液面的产品截面轮廓逆向工程系统的研究

A new reverse engineering system of product profiles was presented,it included the digitized scanning system for product profiles based on liquid,CAD system,mold design and manufacturing system.

提出了一个新型的产品轮廓反求的逆向工程系统,其中轮廓数字化扫描方法以液体作为测量介质,液体的液面与产品之间形成的交线即为要测量的产品的截面线。

Application of Lattice Boltzmann method to simulation of impact of droplet on liquid surface;

格子Boltzmann方法在模拟液滴冲击液面中的应用

Fourier transform profilometry (FTP) is used for dynamic liquid surface shape measurement.

将傅里叶变换轮廓术 (FTP)运用到动态液体面形测量 ,采用CCD快速获取由龙基 (Ronchi)光栅投影到处于动态变化过程的液体表面上的一系列变形条纹 ,经过傅里叶变换、频谱滤波、逆傅里叶变换、三维相位展开等处理后得到重建的一系列液面面形 ,能再现动态液面的变化过程 ,也能获取液体旋涡的一些特征参数 ,为流体力学相关研究提供了一种新的方法。

Lapalace formulae is drawn from fluid mechanical equalibrium equation and a new method for establishing liquid surface differential equation is given.

本文从流体力学平衡方程导出了拉普拉斯公式 ,给我们提供了建立液面方程的一个新方