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Based on theories of hydromechanics, hydrokinetics and heat transfer, a three dimensional transient numerical model of flow and temperature field of the plasma arc welding molten pool with a moving arc is established.

本文根据流体力学、流体动力学及传热学理论，建立了运动等离子弧作用下焊接熔池流场、温度场的三维瞬态数值分析模型。

Based on the analysing of gating system and the sources of slag and the experiments on hydrokinetics of meltal with hydroen bubbles,it is believed that the most important function of filter in gating system are t cleaning of melt metal and the changing of characteristics of the liquid metal flow.

对浇注系统、夹杂产生物来源及金属液体流态进行分析，氢气泡流体动力学实验表明，在浇注系统中过滤器的主要功能是对液态金属产生"整流"净化作用。

The structure and parameters of the nozzle of a jet mill device are optimized, numerical simulations of the inner structure are carried out with hydrokinetics software, the stress analysis of the structure is conducted with finite element software, and the effects of inlet diameter, section area of throat region, passage shape and diffusion angle on supersonic nozzle are analyzed.

对气流粉碎装置的喷嘴结构和参数运用均匀设计法进行设计与优化，采用流体动力学软件对所设计喷嘴进行流场模拟，应用有限元分析软件对喷嘴内部结构受力情况进行分析，对喷嘴效果进行检验。

Archimedes in the mechanical aspects of the most outstanding achievements, these achievements mainly concentrated in the statics and hydrostatics regard.

阿基米德在力学方面的成绩最为突出，这些成就主要集中在静力学和流体静力学方面。

This course is an introduction to principles of naval architecture, ship geometry, hydrostatics, calculation and drawing of curves of form.

本课程介绍船舶设计、船舶几何、船舶流体静力学、船体曲线计算与绘图等科目的原理。

OBJECTIVE: To assess the therapeutic effect of magnetic fluid hyperthermia on B16F10 melanoma.

目的：探讨磁流体高温热疗对小鼠恶性黑色素瘤的治疗作用。

The fluids are immiscible and in contact over an interface.

该流体是不混容的并在接触面上接触。

In the first section,we study the immiscible displacement of two-phase incompressiblefluid in a porous medium.

第一节讨论FDSD方法对多孔介质中两相不可压缩互不混溶流体驱替问题的应用。

The results show that the impregnation velocity of fluids improves with increasing the vacuum pressure applied.

结果表明，随着真空压力增加，流体对单向织物堆积体的渗透速率增加。

However, in the medium range power density region, two phenomena are co-existed.

在两者之间的中等功率密度范围，激光流体动力学液体溅射现象和气体动力学蒸发现象共存。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。