查询词典 potential flow

This paper firstly analyses the limitations of traditional potential field methods in dynamic environment,and based on this analysis,the traditional potential field is improved by introducing the concept of velocity potential field .

分析了传统势场法在动态环境下的不足，并在此基础上引入了速度势场的概念，改进了传统的势场函数，推导出新的引力函数和斥力函数。

Based on the thorough study of the mechanism of self-potential and exploration method for oil and gas, some problems related to the theory of self-potential have been examined in detail in this dissertation; The origin of self-potential from the oil and gas deposits was re-expounded with the mechanism of the ionic polarization; The interpretation methods for field data collection and data processing are put forward.

本文通过对油气藏自然电位产生机理及勘探方法研究，从理论和应用两个方面分析了现有理论存在的问题，尝试运用离子极化机理重新阐述油气自然电位的成因，作为对现有理论的补充，并给出了一套较完善的野外数据采集和室内数据处理解释方法。

The presence of polarized potential is a ge neral property of the existence of an oil/gas reservoir. The whole oil/gas reser voir together with its diffusion-flowing belt can be taken as the source of the potential field, and the polarized potential can be described by a model of pol arized dipole.

油气藏存在极化电动势是共性，可以将整个油气藏、扩散带和扩散流动带作为场源，其极化电动势可用极化偶极模型描述。

Water potential may be defined as the chemical potential of water in a biological system compared to the chemical potential of pure water at the same temperature and pressure.

可以将水势定义为生物体系中的水的化学势，区别于纯水在相同温度和压力下具有的化学势。

Simulation results show the surface potential closed to sea drops to zero influenced by sea. The lower potential of substation makes more DC currents of power grid flow through transformer neutrals and causes DC bias of transformers.

靠近海洋层的地表电位受到海洋的影响将下降至接近零电位，导致更多的直流电流从靠近海洋的变压器中性点流出，影响了变压器的正常运行。

A capacitive pick off sensor is disclosed that includes at least one conductive plate connectable to a first voltage potential and adapted to be situated adjacent the flow sensor tube which is connected to a second voltage potential.

公开了一种电容拾取传感器，其包括至少一个可连接到第一电势并适于位于连接到第二电势的流量传感器管附近的导电板。

Hence, it is impossible to measure the reversible potential by low-current charge/discharge method because of the potential-hysteresis in the directions of current flow.

在前两章理论研究和分析的基础上，后几章则重点研究添加剂对镍电极性能的影响，特别是较系统地研究了钻及其化合物的作用及机理。

In the absence of a large enough electric potential difference across the LED leads, the junction presents an electric potential barrier to the flow of electrons.

在缺乏一个足够大的电势差全国率领的线索，交界处提出了一种电动势垒，以流动的电子。

Water potential reflects energy level of soil water and the gradient of water potential is an impotent factor describing direction and velocity of water flow.

水势反映土壤水的能态，而水势梯度则是决定水流方向和速度的重要因素。

John Rogers, 11.30.05Once we understand the business and where we think it's going, we'll estimate the sustainable free cash flow the company can generate net income, plus depreciationand amortization, minus maintenance capital spending. Depending on the growth potential, defensibility and profitability of the business, we'll put a 10- 14x multiple on that free cash flow to arrive at a target price.

一旦我们理解公司并且它的发展方向，我们就会估计这家公司能够产生的持续的自由现金流——净收益+折旧+分期还款-净投资，依靠企业的成长潜力、可防御性和收益情况，我们会把目标价定为自由现金流的10-14倍。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。