流

Aquarist's preferences often dictate what ballast will be used with what bulb, but the listed ANSI codes provide a valuable starting point. These lamps will be driven either by a standard M80 or a newer electronic ballast that can replicate the recommended conditions.

鱼友们很喜欢用不同的胆配不同的振流器，实际上，一个ANSI代码是非常有价值的信息，这些灯胆一般由M80振流器或更新的振流器，或相拟的振流器

We indicate that there are violations of the Cauchy-Schwarz in-equality in the interaction of the atomic Bose-Einstein conder sate with lasers,which meansthe existence of nonclassical correlations between atoms and photons.

对外部量子电磁场的各种量子态，计算了超流的二阶关联函数，分析了超流的压缩特性。表明外部量子电磁场中的热噪声不影响超流的压缩特性，但影响超流的二阶关联函数。

his paper mainly introduces the research activities conducted in recent years at CIAE in the field of high intensity cyclotrons, and some critical technologies we have as well as the research progress to date. The technologies presented in this paper include high intensity cyclotron physics; production, adjustment and control of high intensity H-ions; advanced magnetic technique, high-power and high-stability RF technology, vacuum and comprehensive cyclotron experimentations, etc.

本文主要介绍了中国原子能科学研究院自2000年以来在强流回旋加速器领域的研究工作进展和到目前为止所掌握的一些强流回旋加速器的关键技术，内容涉及强流回旋加速器物理，强流负氢束的产生、调节、控制与诊断技术，先进磁工艺技术，大功率高稳定度高频技术，真空技术，回旋加速器综合试验技术等。

The results show that single structure parameters (width and depth of flow path/passage, and height, and angle of dentations) are local and difficult to represent the anti-clogging ability of emitters. Characteristic structure parameters(minimum size of cross section, hydraulic radius and dentitions spacing) can represent the anti-clogging ability of emitters in a sense. There are anti-clogging critical values under the test. Rated flow Qr and the ratio of diameter of labyrinth passage to diameter of particle η are well cor related to the anti-clogging ability and have anti-clogging critical values too.

结果表明：用单一结构参数(流道宽度 W 、流道深度 D 、齿高度 h 和齿角度θ)表征其抗堵塞性能存在局限性；结构特征参数断面最小尺寸 min(D，W、水力半径 R 和齿间距 l 能较好反映滴头流道横、纵断面的结构特征，在不同程度上表征了流道的抗堵塞性能，且在试验条件下各自均存在抗堵塞临界值；滴头额定流量 Qr 和迷宫滴头径粒比η与抗堵塞性能相关性较好，且存在抗堵塞临界值。

This paper explored successfully the qualitative and quantitative analysis of flow field in pipeline imposed on ultrasonic flowmeter. With the installation of the flow conditioner, the non-symmetry flow and swirl flow of disturbant factors were effectively reduced.

本论文成功的探讨管流场对超音波流量计定性与定量的影响，流场因为90度弯头、T型管、…等影响流场稳定的因素存在，若不装整流器，所产生流场的不对称性及涡漩，将会持续到43.5D以上。

Careful analysis on NBE can facilitate nowcasting of severe weather events and further understanding of their evolution. After detailed study on three cases concerning with NBE, it is concluded:(1) NBE triggered by fast moving echo in upstream is an important indication of disastrous wind;(2) NBE can develop into severe storm under proper conditions. There are often two stages during this kind of growing: the first is developing of initial echo, the second is snap growing of echo core;(3) Doppler radar reflects outflow of downburst as a nearly ringed NBE. Inside look on downburst can be obtained combining NBE with other data.

文章结合发生在上海的3次强对流天气个例，详细分析了弱窄带回波在分析和预报强对流天气中的作用，得出以下结论：（1）上游移动强回波的出流边界导致的弱窄带回波是大风预警的重要判断参考；（2）在合适的层结状态和抬升条件下，弱窄带回波会强烈发展，并导致局地雷雨大风，这类强对流天气的发展有两个比较重要的阶段：弱窄带回波上初始回波的发展和回波跃增；（3）下击暴流造成的地面出流在雷达回波上表现为近似圆弧的弱窄带回波，这种弱窄带回波与其他雷达观测特征以及地面观测相结合，有助于对产生下击暴流的对流云的发生发展过程进行细致分析。

A new implicit pressure calculation method and relevant percolation rule are introduced taking account of the advantages of methods suggested by King, Sorbie and Stenby. Simulation methods for various boundary conditions (fixed pressure or fixed flow rate) and well pattern (line drive, five-spot pattern) are presented.

多相渗流的随机渗滤多尺度模拟多孔介质的多尺度非均质性及工程上对渗流模拟空间范围的要求，使得多相渗流的多尺度模拟对于正确模拟渗流过程具有十分重要的意义。

In our research, a 3-D numerical simulation calculation of the outside flow field of the flat-headed van-body truck has been made first. A RNG k-? turbulence model which can increase the calculation precision of the separation flow has been adopted, and the results show that the calculation of the van-body truck with the RNG k-e turbulence model is more exact than that of the standard k-e turbulence model.

本研究首次对平头厢式货车外部流场进行了三维数值模拟计算，模拟采用可以提高分离流计算精度的RNG k-ε紊流模型，计算结果表明其计算精度较标准k-ε紊流模型有显著的提高。

What's more,the three-dimensional velocity,density and pressure distribution of the flow field in the gravity-fed 3-product H.M.cyclone were studied as well,some conclusions were summarized.

通过对无压给料三产品重介质旋流器流场的三维速度、压强、密度和空气柱的数值模拟研究，对无压给料三产品重介质旋流器内的流场有了更深入和细致的了解，得到了几点有意义的结论。

Corresponding to the phase inversion point, a sharp peak in pressure gradient also appears at some gas and liquid superficial velocities. It is found that the input water cut of the phase inversion point for three phase flow which is around 40%, is obviously lower than that for two phase flow, which is around 60%.

采用互相关技术分流型研究了油-气-水三相分层流和环状流界面波速特性，结果表明：固定油水比时，SW‖ST流型气-油界面和油-水界面波速、AN‖DO/W流型和AN‖DW/O流型的气液界面波速均随折算气速和折算液速的增大而增大。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。