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The different head loss pattern was considered as the reason of that up-flow BAF had a longer operation time than down-flow BAF. Carbonate gravel (3～5mm) filter had a larger porosity and consequently had a longer operation time than that of ceramist filter.

试验中发现，上向流曝气生物滤池运行过程中水头损失呈近线性变化，而下向流曝气生物滤池的水头损失则在接近过滤终点时呈明显的指数式突跃增加，这是导致下向流曝气生物滤池运行周期比较短、反冲洗比较容易的主要原因。

After 180 minutes electrodialysis without aerating when electric current is constant, the value of R of these two kinds of membrane were 4.95×10^(-7) molml^(-1)cm^(-2), 3.76×10^(-6) molml^(-1)cm^(-2) respectively.

在恒流条件下，不曝气时电渗析的效果反而好，180min时，曝气和不曝气条件下疏水氟膜的R值分别为3.24×10^(-6)molml^(-1)cm^(-2)和3.76×10^(-6)molml^(-1)cm^(-2)。

In this way, it seems a bit out of date, the trend by the mainstream, but non-mainstream layout its greatest advantage is the negative of exposure, and proto-photoptic part of the form a natural way, so there is still used in the long version of the business and lithographic printer rotary machine, it can only do Ministry of exposure and proto-formation, and the version and edition of the exposure draft is not necessary and thus smaller, faster, and the other, negative version of the UPS can borrow bakeout and re-exposure produces and proto-hardening, seyuan plates, long after their transformation to card printing 200,000 points, such as bakeout multiplicable plates after four hundred thousand copies of the publication and the newspaper industry has a positive effect.

这栽方法看来有点过期，是由干不源走向否干不源版式，但它最不小劣势是晴片型曝平，有感平部不合才酿成印纹的板滞方法，所以目后仍用在不幼版的商用及印报轮转平印机，它可以只怠工印纹酿成部曝平，而版口及版尾不离是必定曝平地域，因此背积较小、速率较迟，另边，晴片型冷感版可以不还烘烤及再曝平爆发印纹强硬，啬耐印度，在不幼转制卡二十万不合印版，如烘烤后可补充耐印四十万份，差不小度出书及报业有正背功用。

After 150 s discharge with oxygen bubbling at 667 m~3/(m~3h) aeration intensity, the inactivation efficiencies of saprophytic bacteria, iron bacteria and sulfate reducing bacteria achieved 1.85, 4.51 and 5.70 log reduction, respectively.

考察了电导率、细菌初始浓度和Fe~(2+)对NTP杀菌的影响，同时考察了曝气气源(O_2、N_2和空气)和曝气强度对NTP杀菌的影响，试验表明曝气有利于杀菌，曝O_2的效果最好。

Comparing with real engineering, analyze the experiment and simulation results, the conclusion is that the mixture model can simulate the flow field of gas-liquid two-phase well; the effect of plain plug flow aeration is better than circumvolve plug flow aeration's; for the same plug flow aeration , the effect of 20m/s aeration is better than 10m/s's and

结合实际工程的运行，对实验结果及模拟结果进行对比分析，结论为：采用混合模型能够很好的模拟曝气池内气液两相流的流场；平移推流式曝气比旋转推流式底层曝气的曝气效果好；在同种曝气方式，相同工况下，20m/s的曝气速度的曝气效果要比10m/s、30m/s的曝气速度的曝气效果好。

The common problem of combined biochemical pool in the system for waste water treatment in food and drink industries is that the mangle of aerators aerate asymmetrically in the contact oxidation pool, sometimes no aeration in large scope.

食品饮料行业废水处理工艺系统中组合生化池常见的问题是，由于曝气器的坏损导致接触氧化池中曝气不均，甚至出现局部曝气而大面积不曝气现象。

A soon-to-exposure, exposure toppedwith photoptic layer of PS plate is placed on a printer over a film, the main light, exposure to an extreme and two film on designs in the PS version shows basic "" image (Note: all model PS version of exposure conditions is recommended to use cyclophos phamide light source of iodine to 3KW lamp light version of gallium with a distance of 1 m).

一、曝平曝平即不兵涂有感平层的PS版置于晒版机工息台下，放好底片，堵住宾平、输平两不宾曝平使底片上图案在PS版上表现不入根基&影像&（注：各型号PS版的曝平后提保举搁置①平源为3KW的碘镓灯②灯版距1m）。

Based upon study of the gas flowrate changes of filler under various filling rates, submersion depth ,microporous and single orifice aeration ways,different aeration density and other conditions the hydraulics characteristics of HSL aerobic biological fluidized bed is studied,which provide good references for optimization design of HSL aerobic biological fluidized bed and similar reactors.

通过研究HSL好氧生物流化床在不同填料填装率、不同曝气水深、微孔曝气与单孔曝气两种不同的曝气方式、不同曝气密度等条件下的填料流气量，揭示了其水力学特性，从而为优化HSL好氧流化床及类似的反应器水力学流态提供有益的参考。

Film, sulphuric acid paper haihong-type: this type of original, exposure time, should be carefully handle, because some of the pictures and texts used in film than sulfate for paper document the required exposure time to increase twice as much, or even better, this type of original in exposed not only to ready a sheet of typing paper to retaining to part of the exposure time, but also to prepare a ratio of sulphuric acid paper size large waste PS version mastering sulfuric acid paper blocked the view of typing paper, and the film also exposure, this piece of PS version is good to all of retaining this side of sulfuric acid paper for extending the original copy for the last half of the original version, so that the exposure time of light and dark sides.

软片、硫酸纸参半型：这栽典范榜样的原版，在曝平工夫上，更答不苛澈底不天把持，因为用软片的一些图不白给比用硫酸纸的图不白所需曝平工夫给补充二倍，甚至更众些，这栽典范榜样的原版在曝平时，不但给绸缪好一张打字纸来挡去一局部曝平工夫，而且还给绸缪一块比硫酸纸面积稍不小一不面的宝PS版，在把持好硫酸纸遮关打字纸，而软片一面还给曝平的环境下，这块PS版不离起到残部挡好硫酸纸的这边，以延不幼软片这半版原版的曝平工夫，使双方的图不白深浅分歧。

Throws the increment in the sodium hypochlorite is 10%,曝气 the time is 1 hour its processing efficiency reaches as high as 98.10%, simultaneously may know: The ultrasonic wave degeneration dicarboxylic acid effect is not ideal

在次氯酸钠投加量为10％，曝气时间为1小时其处理效率高达98.10％，同时可以得知：超声波降解对苯二甲酸效果不理想

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐