三角洲的

Xuzhou city regards the Yangtse River as delta " group of half days of transportation," direct bear accept " compendium of program of traffic of canalage of highway of modernization of area of delta of the Yangtse River " brings concerned Hui Li, to its development region economy is having very profound effect effect.

徐州市作为长江三角洲的"半日交通圈，"直接承纳了《长江三角洲地区现代化公路水路交通规划纲要》所带来的有关惠利，对于其发展区域经济有着十分深刻的影响作用。

In this thesis, beginning with the research of the Yellow River delta formation history, the landscape heterogeneity is related with the delta evolution. According to different dynamic environments, the Yellow River delta landscape is divided into three zones: delta plain landscape, tidal zone landscape and submerged delta landscape, and the landscape characters of each zone is analyzed and discussed respectively.

本文从黄河三角洲的形成和发育研究入手，将黄河三角洲的形成与演化与景观分异联系起来，根据动力因素的差异提出黄河三角洲景观的三带结构，即：陆上三角洲景观、潮间带景观和水下景观，就三个带的景观特征分别进行了比较深入的分析和探讨。

Delta, the main types of fan-shaped delta, a bird-shaped feet and pointed Delta Delta.

三角洲的主要类型有扇形三角洲、鸟足形三角洲和尖形三角洲。

The Yellow River course shifts and subdelta formation are analyzed first, and the finger-shaped geomorphology system caused by the river course shifts is also analyzed systemically. The environmental factors such as meteorology, hydrology, DEM , vegetation, soil, soil salt content, and exploitation are all described and discussed.

综合分析了1855年以来黄河流路变迁和亚三角洲的发育演化，以及在此控制之下形成的三角洲指状骨架地貌体系；对黄河三角洲的气象、水文、地形、植被、土壤、含盐量等环境背景特征以及人类开发活动进行了深入探讨和分析。

The deltas differ from typical deltaic model.Deltaic front subaqueous distributary channel sand bodies and deltaic plain distributary channel sand bodies are the skeleton sand bodies of meandering stream-shallow sea delta and braided streain-shallow lake delta respectively but not tranditional deltaic front river mouth sand bars.

这两类三角洲与经典的三角洲模式不同的是，三角洲前缘水下分流河道砂体和三角洲平原分流河道砂体分别构成了曲流河浅水海相三角洲和网状河浅水湖泊三角洲的骨架砂体，而不是传统认为的三角洲前缘河口砂坝。

Four digital elevation models were generated from topographical mapsof the Yellow River delta, which were surveyed in 1956, 1967, 1980 and 1995 in ascale of 1:50 000 respectively. Knowledge on deltaic land subsidence in the deltafrom 1956 to 1995 was obtained through spatial analyses on these DEMs, andspace-time variation rule of land subsidence was obtained through statistical analysestoo.

本文收集了黄河三角洲地区1956年、1967年、1980年和1995年四个时期的1：5万地形图，提取高程信息，应用地理信息系统软件生成数字高程模型并展开了相应的空间分析，得到各个时间段内黄河三角洲的地面沉降速率图，通过对各沉降速率图的统计分析得出了三角洲地区地面沉降的时空变化规律。

Taking the sediment discharge of the Lijin Hydrometric Station as input, increment of area and migration of shoreline of the present subdelta as output, by using the model of linear control system which is individual input and individual output, the author built the dynamic prediction model on the development and evolution of the present subdelta, and then predicted its development and evolution, and analyzed the influences of sediment discharge of the river on its development and evolution.

首先，以黄河利津站的来沙量为输入、现行黄河亚三角洲的面积和岸线增长为输出，采用单输入、单输出的线性控制系统模型建立了现行黄河亚三角洲发育演变的动态预测模型；然后，利用该模型对现行黄河亚三角洲的发育演变进行了预测，并据此分析了黄河来沙量对黄河亚三角洲的发育演变影响。

Chapter 4 of this dissertation has carried out a physical simulation study about the processes of formation and laws of evolution of the fan delta in Baimiao gas field. Based on the results of the study about the geological background in this area, this paper has discussed about the sedimentation facies marks for the fan delta in Baimiao gas field, worked out a detailed proposal about the development of physical simulation experiment about the fan delta, and described in detail the general laws and major controlling factors governing the sedimentation processes of the fan delta. A detailed measurement was made about the experimental results, and a systematic comparison was made relative to the prototypic characteristics. Based on the observation and description about the experimental processes and the analyses about the experimental results, this paper has give

在本章中，指出了数值模拟研究的基本特点，给出了扇三角洲形成过程的基本控制方程和数学解法：在此基础上设计和开发了扇三角洲形回成过程的平面二维数值模拟软件，并对计算过程中所遇到的主要问题一计算速度较慢开展研究，对比了以天、旬、月为时间单元进行汁算对沉积结果的影响，研究认为，在流量无突变的情况下，可以适当增长计算的时间步长和适当放松精度要求；根据白庙气田扇三角洲的基本地质特征设计了数值模拟计算的基本条件，以月为单位，计算了扇三角洲四百年的形成过程及演化规律，并以50年为单位输出沉积结果；本章最后还对数值模拟方法及结果进行了讨论。

It is found that the west slope in the Eastern Sag has the formation condition of braided river delta, the development area and stratigraphic position of braided river delta sedimentary system are defined, and the subfacies and microfacies are identified.

确定东部凹陷西部斜坡带具备辫状河三角洲的形成条件，并确定了辫状河三角洲沉积体系发育范围和层位，识别了辫状河三角洲沉积亚相及微相。

Labour, land and power costs in the Pearl and Yangtze deltas, for example, have been rising at double-digit rates.

例如，珠江三角洲和长江三角洲的劳动力、土地和电力价格一直以两位数的速度上涨。

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