查询词典 pyroclastic flow

Taking HPAM solutions as an example, the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is calculated; the distribution of velocity, flow rate and stability parameter is obtained; taking HEC solutions as another example, the flow of second order fluid in eccentric annuli with the inner cylinder moving axially is calculated too; the distribution of velocity and stress is obtained; the effect of eccentricity and axial movement on stress distribution on the outwall of the inner cylinder is analysed.

在理论上，分别用二阶流体和幂律流体模型描述聚合物驱油井产出液的非Newton流变性；分别建立了双极坐标系下二阶流体和幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了幂律流体在内管做轴向往复运动的偏心环空中流动的稳定性参数和流体在内管壁上的压力分布计算公式；建立了二阶流体在内管做轴向运动的偏心环空中流动的流体在内管壁上的压力分布计算公式。

Integrating Navier-Stokes equations with overfall model, this dissertation firstly applied CFX5. 5 solver and full coupling arithmetic to simulate air flow in flow field plates, and evaluated water management of six kinds of flow channels, the results of simulation and analysis were verified by experiments.

本文首次结合Navier-Stokes方程与湍流模型，采用CFX5.5求解器及全隐式耦合算法对对流场板内的空气流动进行了数值模拟，对不同流场板进行了水管理评价，并得到了实验的证实。

Analysis whether this pressure sensors fluxsystem be applicable smaller then 1 cm, and whether the pipe geometricalappearance and flow status influence the flux detection system .and relate velocityof flow、compressive stress、pipe configuration、laminar flow and overfall、differenceof the pipe radius、and so on Use the related principle of the hydromechanics , deduce the method of presswith 2 points and 3 points to measure the flux detection, analyzed the possibility ofmake use of MEMS compressive stress transducer to survey flux detection.possibility and related influence factors from the theories.

对实现压差式测量中多点压力传感器设置间距提出了小于1cm的设想，并用有限元分析模型模拟分析了在压力传感器间距小于1cm条件下流量测量的性能，取得了有意义的实验数据，证明了实现这一设想的可行性。

To probe into the relationship of patchiness with energy flow,matter flow and information flow,and developing research of watershed ecology is a necessary tendency of modern ecology.

故从更高的层次研究水体，将视野从水体扩大到汇水区域，或流域，将其视为一个生态系统进行研究，探讨水、陆之间的斑块镶嵌及能流、物流和信息流的关系，是现代生态学研究的必然趋势。

The flow field model of port plate pair in condition of the linear axial pressure distribution and dynamic model of flow divider pintle supporting system in abruptly variable load were established. Based on the two models, the balancing characteristics of flow divider pintle in ball piston pump was investigated.

在轴向压力线性分布的条件下，建立了配流副的流场模型，同时建立了配流轴支承系统在突变载荷下的动态仿真模型，在此基础上对球塞式液压泵配流轴的平衡特性进行了研究。

Any flows greater than the capacity of the low flow diversion pipeline then flow into the park.The authors present an e'ectrical method by use of the pressure dif- ference transducer with the pitot tube which is installed in the pens- tock of prototype turbine to search for the law of dynamic flow unde?

作者提出一种装置在原型水轮机压力引水管道上的皮托管经差压应变传感器的电测方法，用以测量水轮机过渡过程中的动态流量变化规律；采用这种方法，首先在三座水电站中对原型水轮机各种过渡过程的动态流量变化规律进行了测量，并获得了较为满意的结果。

During the period from the reverse trendelenburg position to the starting point for the closure of the valve, the reverse flow of blood occurred in the experimental group with the velocity of (1.4 ± 0.3) cm/s; while in the control group, there was no reverse flow of blood, but the peak flow rate was decreased from (21.3 ± 2.1) cm/s to (18.2 ± 3.3) cm/s.

动物于头高脚低位至瓣膜开始关闭时，实验组均出现血液返流现象，返流流速（1.4 ± 0.3）cm/s；对照组未出现血液返流现象，但血液流速下降，由高峰流速（21.3 ± 2.1）cm/s 减至（18.2 ± 3.3）cm/s。

And then the paper analyses the influence of the preference of share financing about the Chinese listed companies. The paper sets up the mode of the debt financing-internal cash flow sensitivity by analyzing Has financing constraints theories. And it selects the listed non-financial companies of Shanghai and Shenzhen stock markets to do the demonstration. Two conclusions can be reached from the empirical study:(1) There is a remarkable negative relativity existing between china's listed companies' debt financing and internal cash flow. As the increase of the internal cash flow, the company's debt will decrease. The sensitivity between the two inclines to strengthen with the lapse of time.

通过对融资约束的理论分析，本文建立了债务融资与内部现金流量敏感性分析模型，并以沪市和深市的非金融类上市公司作为样本进行线性回归分析，得出以下结论：(1)中国上市公司债务融资与内部现金流量之间存在着显著的负相关性，即随着内部现金流量的增加，企业的债务融资额将会减少，且随着时间的推移，二者的敏感性有增强的趋势。

This paper explores shareholder approach, material approach and investment approach to cash flow, and it is concluded as follows: Net present value calculated is equal for shareholder approach and material approach, but for fixed assets investment projects, shareholder approach is far more concise and workable than material approach and provides direct cash flow information with clear and useful economic significance. Investment approach analyzes forecast cash flow for investment projects from a different angle, not only offering additional managerial accounting information, but also testing the properness of and providing theoretical support for shareholder approach and material approach.

通过对股东现金流量法、实体现金流量法和全投资现金流量法模型的研讨，提出如下观点：股东现金流量法与实体现金流量法计算的净现值是相等的，但对寿命期有限的固定资产投资项目，股东现金流量法远比实体现金流量法简洁易懂，便于操作，其提供的现金流量信息直观，经济意义明晰，有用性强；全投资现金流量法从另一个角度进行投资项目的预期现金流量分析，不但能提供补充的管理用会计信息，而且能对股东现金流量法模型的正确性进行验证，互相提供理论上的支持。

It is to get a maximum flow with the source flow and the terminal flow being proportionable to solve the circulation problem .

，它要求特定的源点和汇点的流量成一定的比例关系。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A: I hear Mr. White wants to run for the Presidency!

我听说怀特先生要参加总统竞选！