从上游

CHAPTER I Mrs. Rachel Lynde is SurprisedMrs. Rachel Lynde lived just where the Avonlea main road dipped down into a little hollow, fringed with alders and ladies' eardrops and traversed by a brook that had its source away back in the woods of the old Cuthbert place; it was reputed to be an intricate, headlong brook in its earlier course through those woods, with dark secrets of pool and cascade; but by the time it reached Lynde's Hollow it was a quiet, well-conducted little stream, for not even a brook could run past Mrs.

雷切尔·林德的家就在安维利大街向下斜伸进山谷的地方，四周长满了梢树和野生花草，一条小溪横穿而过，源自老卡斯伯特家农场的树林，上游水流湍急，从树林中蜿蜒奔流，暗藏着许多隐秘的潭水和小瀑布；但当小河流到林德家门前的山谷时，却变得安静而规矩。

This paper analyze and study the influence of the superimposition in depth based on the previous achievements and combined with the theoretical qualitative analysis and project instances. The main contents as follow:Chapter 1: Indicate the significance and objective of this paper, review the previous achievements of the transient process and superimposition, and then present the study purpose of this paper.Chapter 2: combined with the physic knowledge of the fluctuation and the superimposition, Indicate the physical essences and the influence of the superimposition phenomena that exist in the diversion pipe system, and take one hydraulic turbine owning only one diversion tunnel and two hydraulic turbines sharing one tailrace conduit for instance to study out the numerical calculation superimpose operations.Chapter 3: From the calculation theory of the parameter of the guaranty calculation of regulation of the hydro-turbine, qualitative analyze the influence of the superimposition on them and the superpose time, combined with some project instances, get the numerical value of the influence of the superimposition and the superpose time.Chapter 4: Based on the previous achievements of the calculation and theoretical analysis of the surge-chamber ground swell, analyze the influence of the superimposition on it and the superpose time.

本文在前人研究成果的基础上，结合理论定性分析及工程实例，对波动叠加带来的影响进行深入分析研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水电站过渡过程及波动叠加方面的有关研究成果，在此基础上提出本文的研究内容；第2章，结合物理学中有关振动与波动叠加方面的有关知识，阐述水电站引水发电系统中存在的波动现象的实质及其影响，并以两机一洞和一机一洞具有上游调压室或下游调压室的水电站拟定其数值计算叠加工况；第3章，从机组调保参数的理论出发，定性的分析波动叠加对机组调保参数的不利影响及叠加时间，结合几个工程实例，得到波动叠加带来的影响大小及叠加时间；第4章，在前人对调压室涌浪进行计算和理论分析的基础上，分析波动叠加对调压室涌浪的影响及其叠加时间。

It was a long journey to get to the rainforest. From our hotel, we took the bus for 20 mins, then took a speedboat for 45 mins, then switched back to bus for another 15 mins, then went on a longboat to go upstream a river for 30 mins!

从我们的酒店，我们乘坐公共汽车20分钟去码头，然后再坐45分钟的快艇，然后转巴士再坐15分钟，接著﹐乘坐长艇上游河流30分钟！

In general, the upstream COD tended to be the highest, followed by midstream and downstream.

从总体趋势看，COD浓度的变化规律是：上游＞中游＞下游。

If the source of overpressure is from upstream, the relief valve for that stream is best placed on the inlet.

如果源泉的超压力是从向上游，泄压阀为那条小河最好被安置在入口。

As far as the spectator participation, the first time the Miss Rockaway Armada pulled up on the banks of a town along the upper Mississippi and people started spontaneously bringing us clean socks and tomatoes from their gardens; I felt that we were doing something right.

至于观众的参与，第一次拉小姐洛克威舰队在沿密西西比河上游和人民银行的小镇开始了自发把我们从他们的花园干净的袜子和西红柿，我觉得我们做得对。

Jing Linbo expresses when accepting our newspaper reporter to interview, the influence of global banking crisis is in gradually outspread, direct from exit model the enterprise begins to affect industry the enterprise of medium, upper reaches, Overseas order for goods cancels, the product sells market atrophy, often create company product keep long in stock, slow-moving, swap looks this kind was like primitive means to rise to help an enterprise alleviate in this special period the action of pressure.

中国社会科学院财贸研究所所长助理荆林波博士在接受本报记者采访时表示，全球金融危机的影响在逐渐延伸，从出口导向型企业开始波及到产业中、上游的企业，"海外订单取消，产品销售市场萎缩，往往造成企业产品积压、滞销，以货易货这种看似原始的方式在这个特殊时期起到了帮助企业缓解压力的作用。"

Referenced sub-drainage basins were selected in the upper reaches of the Madao main river way, and topographic parameters were obtained using software of River Tools in each sub-drainage. Monthly runoff simulations were then applied to them with the same parameters as Madao catchment, the responses of runoff simulation to topographic parameters were studied, and the Normalization of Runoff-total Length Index were presented. Analyses indicate that NRLI is influenced by source density. NRLI fluctuates tempestuously as source density decreases sharply.

在此基础上从马道出水站点沿主河道往上游再选取6个控制点，运用River Tools软件提取出各个控制点控制流域和地形参数，分析参数变化情况，并在此基础上用前面率定好的参数来模拟各个控制点处的出口流量，分析径流对地形参数变化的响应关系，并提出了归一化径流－河道总长比指数。

The structure beam response control method based on the traveling wave model was discussed theoretically. The theoretical traveling wave model was applied to a long thin beam with piezocrystal actuators and the traveling wave active control law for the condition of making measurement upstream and performing control downstream was derived and the control compensator formula of the flexural waveguide in the form of transcendental function was deduced.

从理论上探讨了基于行波模型的结构梁响应控制方法，在梁及压电陶瓷作动器处采用行波理论模型，导出了上游测量、下游点施加控制的行波主动控制律及相应的具有超越函数形式的控制补偿器表达式。

It expanded to 106119ha in 1973, descented to 99167ha in 1987, backed up to 112440ha, and attained the max value in history—123170ha in 1998 and descent to 109934ha again in 2001. GIS overlaying analysis shows that, the spatial change of Minqin Oasis had the different characteristics in different stage in the last 50 years: at the end of 50's to the beginning of 70%, oasis expandation Was performed by extension of origin oasis; the atrophia of oasis from the beginning from 70's to the 80's was performed by increasing of non-oasis spot pieces of inner part for oasis; the main performance of keeping on expanding of oasis from late 80's to late 90's is outside extension of Baqu oasis near the upper stream, with increased oasis area in interior of hungriness and increased area of non-cultivation in Huqu oasis in the north. From 1998 to 2001, opening up wideness in interior of hungriness continued, but hnngrinessization of oasis became worse. The oases in the Minqin Basin developed from small to large and back to small in terms of area changes, and from south to north then to south in terms of spatial changes.

绿洲分布图的GIS叠加覆盖分析表明，近50年来民勤绿洲的空间变化在不同阶段有不同的特征：50年代末至70年代初，绿洲扩展主要表现为已有绿洲的外延式扩大；70年代初至80年代后期的绿洲萎缩，主要表现为绿洲内部非绿洲斑块增加；80年代后期至90年代后期的持续扩展，主要表现为靠近上游的坝区绿洲向外围扩展和荒漠腹地绿洲面积的增加，而北部湖区绿洲弃耕面积不断扩大；98年至2001年，绿洲荒漠腹地的开荒还在继续，但湖区的绿洲荒漠化还在进一步加剧。50年来民勤绿洲的发展总体上经历了一个面积由小到大再到小，空间位置上从南而北再向南的迁移过程。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。