道

The results show that the flow length of microfluid in micro channels that have different section shapes but the same length(50 mm) is in inverse proportion to sections RPA (RPA means the ratio of the section s perimeter to its area),and the smaller the RPA , the longer the flow length.

研究结果表明：微流体在截面形态不同，长度均为50 mm微流道中的流动长度与流道截面的比表面积(截面周长与截面面积的比值)呈反比关系，比表面积越小，流动长度越大；当微流道的比表面积较小时，熔体温度与注射压力对流动长度的影响较大；当比表面积较大时，熔体温度与注射压力对流动长度的影响较小，且不论比表面积如何变化，注射压力对流动长度的影响比熔体温度对流动长度的影响显著。

Stone ballast plays an important role in ballasted truck of railway. Ballast density and resistance are an important parameter for the analysis of track structure and it has close relations with rapid deterioration of the quality of the track geometry as well as the amount of work in railway track maintenance.

碎石道床是铁路有碴轨道结构的重要组成部分，其道床密实度、道床纵、横向阻力不仅是轨道结构分析的重要参数，并且与轨道几何形位劣化和轨道养护维修工作量有密切关系。

Found that because the narrowness of the channel, compared with large channel, there have a great difference in bubble behavior and relative character, when used Bowering relation to predict theONB point, this paper given a correlation of C1 = 103.736 Res -0.8 Eu-0.123 to modify theBowering relation to consider the influence of flow velocity and pressure on ONB point.

发现由于流道狭窄，汽泡行为及相关特性等与大流道相比有很大不同，使用Bowering关系式预测过冷流动沸腾起始点时，本文提出了一与流道内的流速和压力条件紧密相关的修正系数C_1，得到了关系式C_1=10~(3.736) Re_s~(-0.8) Eu~(-0.123)，弥补了Bowering关系式中没有考虑流速和压力等因素对沸腾起始点影响的不足。

The results indicates, with the same level of other parameters, the TN removal can reach 80.0% and 70.9% with the control of dissolved oxygen under the levels of 0.3-0.6mg/l and 0.6-0.9mg/l, respectively; the TN removal upgrades from 80%, 83% to 84.1% with the decrease of sludge load in the system from 0.1, 0.07, to 0.05gCOD/gMLSS·d; the nitrogen removal only reaches 58% when C/N is 4, but can reach more than 80% when C/N is at or over 7, which indicates that the TN removal increases when higher C/N ratio; when HRT increases from 12h, 18h to 24h, the TN removal also increases from 78.6%, 82.0% to 83.0%; the TN removal average in the system increases from 75.6%, 78.5% to 83.0% with the increase of sludge age from 18d, 20d to 24d; the low oxygen conditions in the modified Orbal oxidation ditch model do not decrease the effect of COD removal, and the dissolved oxygen gradient with the distribution of 0-2-1mg/l in the system ensures the COD removal reaching the range of 80%-86%; and the phosphate removal, however, is not good enough, which varies from 40% to 50%, even lower than 35% in occasional situations, and the phosphate concentration in the outflow varies in the range of 1.28-2.38mg/l, which dissatisfies the discharge standard with the level of 1.0mg/l.

试验结果表明，在其它参数相同的情况下，将外沟道的溶解氧分别控制在0.3～0.6mg/l 和0.6～0.9mg/l 两个水平，外沟道中TN 去除率分别为80.0%和70.9%；系统中污泥负荷分别为0.1gCOD/gMLSS·d、0.07 gCOD/gMLSS·d、0.05 gCOD/gMLSS·d时，随着污泥负荷的降低，TN 的去除率却是上升的，分别为80%、83%、84.1%；本试验中，当C/N 为4时，仅能获得58%的脱氮率，当C/N 为7 或更高时脱氮率能达到80%以上，进水C/N 比值越高，总氮的去除率越高；在本试验中采取的水力停留分别为12h、18h、24h 时，外沟道中的总氮去除率随水力停留时间的增加而增加，分别为78.6%、82.0%和83.0%；当系统泥龄分别为18d、20d、24d 时，系统平均TN 去除率分别为75.6%、78.5%、83.0%，随着泥龄的增大TN 的去除率增加；改良型奥贝尔模型的低氧条件并没有降低COD 的去除效果，系统0-2-1mg/l的溶解氧梯度分布使得COD 去除率一般都在80%～86%之间；本试验中磷的去除效果不好，去除率基本在40%～50%之间，有的甚至低于35%，出水磷的浓度在1.28～2.38mg/l 之间，低于1.0mg/l 的出水排放标准。

Bloom wound a skein round four forkfingers, stretched it, relaxed, and wound it round his troubled double, fourfold, in octave, gyved them fast.

布卢姆将松紧带绕在四根叉开来的指头上，伸开来，松了松，又将它两道、四道、八道地绕在不安的指头上，勒得紧紧的。

The proper way of living is to find the laws of nature with which our lives must be harmonized.

寻找道的人必先默默地寻求智慧：&可以讲出'道'的人，并不知道'道'。&

First, a full three-dimensional numerical model is developed, which considering not only the rib resistance to the species, but both the single- and two-phase flow and transport in the gas channels and diffusers at both the anode and cathode sides of PEM fuel cell. Two sets of boundary conditions, one for a conventional flow field and the other for an interdigitated one, are presented. A detailed discussion of the numerical techniques for the PEM fuel cell model is given with a flow diagram to provide an overview of the solution procedure using FORTRAN language.

该模型考虑了双极板上流道间的筋部对于反应气体传递阻力以及电流密度分布的影响，从而使模型具有三维特性；建模过程中进一步考虑了流道和扩散层中可能存在的液态水，从而将现有的单相流动模型拓展成为两相流动模型，因此，该模型可以同时模拟电池内部阴极、阳极侧流道和扩散层中两相流动的发生和分布情况；分别给出了平行流场燃料电池和交指型燃料电池的边界条件；详细讨论的三维模型的耦合求解算法和技巧；用实验数据验证的该模型的准确性。

In such massing together of what one does not love, there are three kinds, which are the realms of hell, hungry ghosts, and animals.

在这样的整体之中一个人不喜欢什么，这里有3种，这就是地狱道，饿鬼道，畜生道。

So in the method Zhe in week's eyes,"virtuous" is branch and"way"'s concrete usage in social life problem of "way", and"way" not only is the objective regulation of natural science, but also is also a more philosophic ultimate end truth.

所以在周法哲看来，&德&是&道&的分支和&道&在社会人生问题方面的具体运用，而&道&不仅是自然科学的客观规律，而且也更是哲学的终极真理。

To get to the summit from by the eastern route, climbers have to scale a steep flight of Eighteen Mountain Bends, the most precipitous section.

但据 说此道是古代帝王所取之道，名胜古迹自然更多，所以，大多数人还是选择由此道登山。而西路登山较快，也为很多人喜欢。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。