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Take as a single example this easily overlooked little passage from the rondo of the 23rd piano concerto; it is, in its essence, nothing more than a functional bit of connective tissue taking us from one place to another within the movement's structure. Ten brief bars—about 10 seconds—of basic scalar material, doing its job efficiently and economically. But it is at the same time so richly and amusingly characterized, so full of piping energy, with its determined but struggling piano line climbing its stutteringly inexorable way up to the note E, punctuated along its course by deadpan commentary from the winds, sneaking in the D natural that signals the change of key with almost undetectable sleight of hand—the passage almost constitutes a miniature comic universe all by itself.

请听这段在《第23钢琴协奏曲》中常常被人忽视的回旋曲( http：//img.slate.com/media/87/7_mozart488.asf )，没有哪个功能性连结段能比它更好地仅通过乐章结构就将听众带入另一个世界，长约10秒钟的概要部分(brief bars of basic scalar material)不仅经济有效地发挥其职能，同时又表现出丰富、诙谐的特色，充满木管乐器的活力，伴随着坚决但阻碍不断的钢琴的快速音群移入E大调，其行进过程不时被管乐器部加以修饰、注解，自然而然的转为D大调，转调手法之娴熟几乎无法察觉——这段音乐本身创造出一个微缩的喜剧世界。

Primary HMC were cultured and passage 3 and passage 4 of the cells were used. Intracellular calcium release was assayed with confocal analysis. Expression of TGF-β mRNA and the content of supernatant fibronectin were teste...

结果 ：IgA肾病患者aIgA1呈时间依赖性诱导正常HMC细胞内游离Ca2 +释放、TGF -βmRNA表达和Fn分泌，作用趋势与正常人aIgA1相同，高峰时间分别为孵育后 6 0s、2 4 - 36h和36 - 4 8h ，但作用强度显著高于正常人aIgA1；在作用高峰时间，患者组和正常人组Fluo - 3最大相对荧光强度增加值分别为(95 83± 11 4 3)和(5 5 88± 12 72 )，TGF -β/GAPDH的比值分别为 0 96± 0 0 6和 0 74± 0 0 2 ，Fn含量分别为(6 4 5± 0 18)μg/L和 5 5 4± 0 。。。

The causative agent of the disease is an Corona virus, infectious bronchitis virus IBV）, classified as Corona .Present vaccines for IB are all modified live viruses derived either by sequential passage embrocated chicken eggs. As Immunogenicity of IBV is usually correlated with its virulence, almost all modified live IB vaccines remained insufficient attenuation and have shown a variety of side effects including spread of vaccine virus to no vaccinates, occurrence of long term "carrier" birds, and increasing virulence during in vivo passage.

目前国内外预防本病所用的疫苗大多数是弱毒疫苗，但现用弱毒疫苗都存在以下缺点：（1）与IBV强毒一样，其弱毒疫苗株也能引起潜伏感染，潜伏感染的鸡将终生带毒；（2）疫苗病毒可以由接种鸡传染给非接种鸡，在鸡群之间传播过程中毒力会返强，从而成为新的感染源；（3）传染性支气管炎病毒极易发生变异，且易成为病毒重组的供体和受体，给使用IB传统疫苗预防和根除IB带来极大的困难。

Presents a method which evacuates some people by cross-passage, and obtains the longitudinal ventilation velocity that enables not any smoke in the cross-passage. The results can provide useful reference for putting forward general evacuation modes in subway tunnel fire.

提出了利用联络通道来疏散部分人群的方法，得出了使联络通道内无烟的纵向通风速度，为提出全面的地铁区间隧道火灾人员疏散模式提供有益参考。

Because if now the Administration's legislative program fails of passage or is mutilated in the course of passage, it will not be possible to blame an obstructive minority consiting of filibustering Republican windbags.

另外，新的选举联盟提升了每位民主党参议员的权利，因为他们可以威胁说要与40位共和党成员结成联盟，在关键的法案中彻底摊牌来阻挠政府的计划；更现实地说，他们能以修订的形式坚决要求高昂的补偿，就为了有利于自己选举前景的利益集团得到好处。

An arch or a support for a passage over another passage in a mine.

他在自己的国家中尽管举足轻重，但在此地却毫不显眼

Provided is a blowing fan capable of increasing the wind quantity to be blown, even when set on a passage having a relatively large passage resistance, and reducing the blowing noise by providing a turbo blade in an optimum position of the rotor blade of an axial fan.

提供一种送风风扇，在轴流式风扇的旋转叶片上将涡轮叶片设在最合适的位置上，这样即使设置在流路阻力比较大的流路上，也可使送风的风量增大，同时可减小送风噪音。

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。

Such material must be conductive to prevent passage of electric elds and highly permeable to prevent passage of magnetic elds.

这种材料必须能够有利于阻止电场的通过并且能够高效阻止磁场的通过。

First super-low specific-speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low; Secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. Therefore the H ~ Q characteristic curve is often hump-shaped, and at the low-capacity operating condition the instability often occurs; Thirdly the centrifugal pump at high-capacity operating condition is easy to overload because the N ~ Q curve appears a rising trend.

首先由于它的扬程较高、流量较小，所以它的流道狭长，圆盘摩擦损失较大，效率相对较低；其次由于它的流道扩散较严重，易在叶片进口产生回流和在出口产生脱流，扬程流量特性曲线易出现驼峰，在小流量工况下易产生不稳定现象；第三，由于其功率流量曲线呈现上升趋势，在大流量区运行时电机易过载。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。