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When pH is litmusless, the purification efficiency is the largest. The unhomogeneity of liquid flow results in the uneven biofilm growth. The flow resistance after start-up is significantly larger than that before start-up, whichprovides a method to monitor the biofilm growth.3、The packed bed is simplified to a series of straight capillary tubes covered by the biofilm. The two-phase flow and mass transport, biochemical reaction kinetics, and the limitation of oxygen are taken account of in this model. The results of model are basically in agreement with the experimental data.

通过观察还发现，由于液体分布不均，生物膜在滴滤塔内生长分布不均，并且挂膜后，滴滤塔的孔隙率减小，两相流动阻力比空塔时的大，可采用流动阻力的变化作为判断挂膜成功与否判据。3、首次将多孔填料塔简化成多个竖直毛细管并行排列构成的填料，应用两相流理论，结合生化反应动力学，并考虑氧的限制，建立了一个生物膜滴滤塔降解废气的毛细管模型，其结果与实验数据吻合得较好。

In the research on the backward-wave oscillation suppression the startoscillation current which is derived from Two-wave theory approximately is given up. Four typical un-uniform slow wave structures start-oscillation current equations are derived by backward-wave amplifing gain expressions with the Two-wave theory. Then the start-oscillation current rates I〓/I〓 between ununiform circuit and uniform circuit of the four structures have been got.

在返波抑制问题的研究中，从二波理论出发，抛弃了二波理论中从起振条件出发来得到起振电流近似表达式的方法，而是利用二波理论的基本关系式分别推导出了四种典型实用的非均匀输出线路的返波增益表达式，采用计算返波增益的方法来得到四种非均匀输出线路的起振电流与均匀输出线路起振电流的比值I〓/I〓。

A model ejector with variable geometrical throat was designed, then, the processes of start and unstart were investigated, and a criterion was proposed for the condition that second throat is too small to start.

设计了几何结构可调的模型引射器，研究了引射器的启动和不启动过程，提出了判断第二喉道面积过小导致引射器无法启动的判据。

Chris Woodhead, the former Chief Inspector of Schools, who undertook a more limited review of primary teaching for the previous Conservative Government with both Professor Alexander and Sir Jim, said he feared a later start would lead to lower standards: It is reasonable when children arrive at school for the emphasis to be on socialisation, but I see no reason to postpone the start of formal learning.

&克里斯Woodhead公司，前总督学，谁承担前一个既教授吉姆亚历山大爵士和保守党政府的小学教师比较有限的，他说，他担心以后的启动将导致较低的标准：&这是合理的儿童到达学校的重点应在社会化，但我认为没有理由推迟正规学习的开始。

If Mr. 45 were to put the same amount aside but start at age 45 instead of 25, he would only have $148,269 saved, definitely not enough to start retirement with.

如果先生45人，把同样数额外，但开始时年龄在45岁而不是25日，他只会有148269美元保存起来，肯定是不够的，开始退休。

"The worst thing that would happen is that Pakistanis will start disowning this war and will start sympathizing more with the militants than the Americans or NATO," said Talat Masood.

他说：%26ldquo；可能发生的最坏情况就是：巴基斯坦人开始不再认同这场战争，并且更多地同情激进分子，而不是美国人或北约。

With the helicopter flying from right to left, start pirouetting, before the helicopter passes in front of the pilot, start a roll away from the pilot, while pirouetting.

直升机由右向左飞行，机体开始自旋，在直升机未到达操控者的正前方时，机体保持自旋并且执行外侧侧滚。

Then I can start marking the rivets with pencil and start those thick CA drops.

然后我就可以开始标志铆钉铅笔，并开始那些厚厚的钙下降。

After a success is held, will continue to regard an activity as the theme with the recursive " of " music this year, exert oneself disentombs the outstanding music talent of rich actual strength, those who make people love is former start musical work, innovation of do one's best goes a batch of nations that have Chinese style and international effect to start network music brand formerly; Network literature is classical grand meeting activity already established good brand image in the society, bencibo sees the mobile way that meeting general participates in jointly through attracting extensive literature lover, choose is outstanding work, the kind that ties through network and traditional media photograph is publicized extensively, achieve home of the spirit on the net of civilized health in all.

网络音乐盛典继上一届成功举办之后，今年将继续以&音乐的回归&作为活动主题，着力发掘富有实力的优秀音乐人才，打造大众喜闻乐见的原创音乐作品，力求创造出一批具有中国风格和国际影响的民族原创网络音乐品牌；网络文学经典盛会活动已在社会中树立良好的品牌形象，本次博览会将通过吸引广大文学爱好者共同参与的活动方式，选拔优秀作品，通过网络和传统媒体相结合的方式广泛宣传，共创文明健康的网上精神家园。

And we've learned that life is one big game Where the winners are all getting paid So stop dragging your feet behind You can't live with the folks all your life So on those days home in your car We jerked the steering wheel to the median Joking that we'd end our lives But we weren't joking all the time Start a band or throw a brick You lazy hipsters make me sick Don't clap your hands; don't start to dance Don't let them know that you're a fan You may be living in Manhattan But where are you really from?

而且我们有了解生活是一场大的游戏胜利者全部正在得到哪里支付在后如此停止故意拖延你一生和人们不能居住在那些天如此在你的汽车中回家我们痉挛了对中动脉的掌舵轮子戏谑的我们将会结束我们的生命但是始终我们不戏谑开始一条乐团或丢砖块你懒惰的 hipsters 使我成为病人不鼓掌你的手；不开始跳舞不让他们知道你是一个狂热者你可能住在曼哈坦但是你在哪里真的从？

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。