将发生

At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

Violence broke out. Cattle growers fought the farmers and sheepmen for control of the land. The cattlemen finally had to settle land of their own, putting up fences and cutting the size of their herds. They no longer could let their cattle run free on public lands.

养牛户为了控制土地而与农民和养羊户发生争斗，结果，养牛户不得不为他们自己确定土地，并围起来，同时，也将他们的大牛群分为小牛群，他们再也不能让他们的牛在公共土地上随意放牧了。

They should show this as a cautionary video to anyone thinking about coming out early.

他们应该将以上发生的事情作为一个警醒的录像展示给那些想早出道的人。

This "culture of struggle" is being institutionalized in diverse ways, some at quite early stages, others quite developed: in films; in music (the union launched an album that included both traditional labour songs and songs specifically written about the recent events); in art (the new educational center has permanent exhibits and will host temporary exhibits celebrating solidarity and internationalism); in the unique level of resources now dedicated to both education and communicating with the membership (the new education center, the expansion of materials and pamphlets, the growth in the core of locally-based educators, the strengthening and expansion of local union papers); in the mood, style, and content at the Canadian Council, Conventions, and other union meetings; and, of course, in the on-going struggles themselves in collective bargaining and - as with free trade - politically.

这种"文化斗争"制度化正在以各种方式，有的还相当早期阶段，其他相当发达：在电影；音乐（联盟发起了一个专辑，其中包括传统的劳动歌曲和音乐专门写最近发生的事件）；在艺术（新的教育中心，永久展览和临时展览将举办庆祝团结和国际主义）；中的独特的资源水平，现在专门的教育和沟通的成员（新的教育中心，扩大材料和小册子，增长中的核心，当地的教育工作者，加强和扩大当地联盟篇）；人的情绪，风格和内容在加拿大，公约和其他联盟会议；和当然，在正在进行的斗争本身在集体谈判和-与自由贸易-政治。

In addition, spermiogenesis includes chromatin condensation, migration of the cytoplasm and mitochondria to the caudal pole of the nucleus, formation of a moderate axial nuclear fossa containing the proximal centriole and part of the distal centriole and presence of a short cytoplasmic canal separating mitochondria from the flagellum.

另外，精子发生过程中还包括染色质浓缩，细胞质和线粒体向细胞核的尾端迁移，在核的后端中轴位置上形成中等大小的核后凹，近端中心粒和远端中心粒的一部分嵌在核后凹之内，短的胞质内陷管将线粒体与鞭毛分隔开。

B. Upon the happening of any event of default, all the rights and remedies of CFC shall

在任何违责事件发生的情况下，CFC可以无须通知客户而将客户帐户内自动执行其全部的权利和补

If pedaling becomes difficult, then it will be time for a chain change as well.

如果脚踏变得很困难，那麼这将是时间链发生变化。

The accountancy will replace along with the development of the social milieu, inevitable occurrence the deal changes with change gradually, change through quality at last with chop round, from a kind of accountancy appearance change become another accountancys appearance, with orientation economy development of request.

会计将随着社会环境的发展变革，必然发生量变和渐变，最后经过质变和突变，由一种会计形态转变成为另一种会计形态，以适应经济发展的要求。

Check the chromogen / substrate solution, the simplest test method is to mark a drop of antibody enzyme substrate added to the preparation of a good solution, if desired substrate color change occurs, you can rule out the substrate factors.

检查色原/底物溶液，最简单的检测方法是将一滴标记有酶的抗体加入到制备好的底物溶液中，如果底物发生预期的颜色变化，则可排除底物的因素。

The fluorescent proteins tolerate circular permutation and insertions of foreign proteins with maintenance of fluorescence.

该技术巧妙地将荧光蛋白分子的两个互补片段分别与目标蛋白融合表达，如果荧光蛋白活性恢复则表明两目标蛋白发生了相互作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。