场

However, the output beam quality of semiconductor laser is poor. Because of the waveguide properties of their active areas, semiconductor lasers generate large divergence-angle beams with elliptically shaped intensity profiles.

由于半导体激光器的结构特点，使得它发出的光束在垂直于结平面方向上远场发散角和平行于结平面方向的远场发散角相差较大(在垂直和平行于结平面方向上的发散角大小分别在30°左右和10°左右)。

Four authoritative figures in related disciplines spoke in three keynote panels, Professor Emeritus James Grunig spoke on "The Shifting Paradigm of Public Relations under the Influence of Digitalisation"; Professor Emerita Larissa Grunig and Mr.

会议更分别邀请到四位在相关界别举足轻重的专家学者主持三场主讲嘉宾演说，并同时举行四场涵盖不同课题的论坛，剖析了公共关系领域不同维度的分野和融合。

The self-excited oscillation imposes a profound influence on turbulent mixing process: i.e., it not only enhances large-scale engulfment or entrainment but also simultaneously decreases the molecular mixing rate.

射流振荡对近场和远场的湍流混合过程都具有重要影响。自激振荡射流能增强宏观上的大尺度搅动，但同时却减弱了微观上的小尺度混合。

In doped ZnO nanowires showed a two step field emission mode and enhanced field emission property.

通过In 掺杂明显提高 ZnO 纳米线的场发射性能，并改变了场发射特性，即In 掺杂 ZnO 纳米线除价带电子发射外，导带电子在低电场时参与发射的特征明显。

After the optimal design, some parameters of the impeller such as entrance angle and diameter and have been changed. The improved impellers efficiency and cavitation performance are better than the former one.

通过对叶轮入口处的流场分析，证实了该泵性能下降是由汽蚀造成的推测；基于速度系数法建立了叶轮优化的数学模型，通过得到的流场数据和该数学模型对原叶轮进行了优化设计，优化结果对叶片的入口角和叶片的入口直径等参数进行了改进，优化后的叶轮达到了提高泵的汽蚀性能和效率的目的。

With the help of finding the effects of the heat transfer process of building envelope on the indoor environment, solving the indoor flow field and temperature field, the heat convection coefficient of wall surface is obtained at last.

通过发掘建筑维护结构的传热过程对室内环境的作用与影响，求解室内速度场、温度场，从而得到墙体表面对流换热系数。

And two models of single channel are also developed, one is formed by ruled-surface impeller, and the other is formed by enveloping surface impeller.

然后在专门的网格划分软件Gambit中对两个整体风机三维流场模型和两个单叶轮通道的流场模型进行网格划分及边界条件设置。

Based on the CAD software UG, the models of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller are developed.

首先本文采用CAD软件UG对直纹面叶轮离心通风机和包络面叶轮离心通风机进行了整体风机三维流场建模和单个叶轮通道的流场建模。

In order to equalize the two, fields may need to be dropped or duplicated.

为了实现两者的均衡化，可能需要丢弃场或者复制场。

The two flows can be solved simultaneously and no boundary condition is needed on the interface between them. The implicitly limitation of Continuity Equation makes it sure that the velocity and pressure of the two flows on the interface keep to equal at any time.

数值计算时，波浪与孔隙流的交界面不需要给定边界条件，而是通过连续方程的隐式约束，保证两种流态在边界上的速度和压力匹配，实现了波浪场与孔隙流场的同步耦合。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。