In our country , " national clean fuel vehicle leading subcommittee " is founded for largely spreading nature gas vehicles . planned by 2005 , the number of nature gas vehicle will go up to 500 , 000 in our country 我国已经成立了“国家清洁燃料汽车领导小组” ，大力推广燃气汽车，计划到2005年，全国燃气汽车保有量将达50万辆。
Sales in furniture , steel , flowers and automobiles are going on briskly . the consumption in auto vehicles reached 3 billion yuan . the retention volume of auto vehicles was 78 , 533 , 14 cars owned by hundred households , ranking in the front of the province 现代商贸流通业逐步启动，家具、钢材、花卉、汽车等市场销售畅旺，其中汽车消费达30亿元，全市累计汽车保有量为78533辆，每百户居民有14辆汽车，居于全省前列。
Abstract : the main factors of influencing national vehicle markets are analyzed . the vehicles possessing capacity prediction models are set up base d on exponential smoothing , multivariant regression and neural network . the applic abilities of the three models are discussd 文摘:对影响我国汽车市场的主要因素进行了分析，建立了以指数平滑、多元回归、神经网络为基础的汽车保有量预测模型，并对三种模型的适用性作了简单分析
Goals of highway network planning , in terms of the total length of the highway network as well as the share of expressway and over class ii highways in the network , were analyzed in chapter two by using of network connection index and analogy methodology . the developing goals of shaanxi arterial highway network were proposed . in the third chapter , the overall arrangements for highway network were studied through the importance index of nodes and links 通过与世界经济发达国家的公路网密度和运输结构、以及我国其它地区，特别是与陕西省相邻省（区）的公路网发展水平相对比，根据我国经济发展“三步走”的奋斗目标，采用连通度指标测算和类比的方法，按网连通度、公路网密度、人均公路网总里程和单位汽车保有量的公路网总里程指标分别进行测算，确定了陕西省的公路网发展目标?公路总里程、高速公路里程和二级以上公路占有率的适当范围。
Functions of the correlative analysis , multiple linear regression method and stepwise regression method in identifying environment - affecting factors were compared . with baiyin city of gansu province as an example for analysis , the three methods were used to identify environment - affecting factors of heavy metal pollution of the soil - crop system in the suburbs of the city . based on results of the experiment , indexes were proposed for selecting plans for remedying contaminated soils in the region under research 随着我国汽车保有量的不断提高,汽车排放污染物对大气环境的影响已经引起人们的广泛重视,并采用各种各样的方法进行治理,国家有关部门也为此制订了相关的标准和法规.本文简单介绍汽车排放污染物及其检测方面的基本知识
Because most of ev ' s body is too short a little , the thesis emphasize how to attain a subective ideal shape through the principle to attain beautiful shape and the visual illusion ; on human engineering , the thesis aim mainly at the analyse of fist - ellipse , foot - ellipse and at the design of metef , seat and lamp in order to improve driver ' s efficiency at the most 2000年我国石油消耗量为2 . 6亿吨，进口9000万吨，其中汽车消耗了90的汽油， 20的柴油。到2030年，我国汽车保有量将增加15 20倍，即使考虑到内燃机轿车的技术进步，我国石油消耗量将达到8 10亿吨，其中进口5 6亿吨，形势非常严峻。
It provides three automobile developing models which are suit to requirements of long - term technological plan of our automotive industry ; constructs mathematical models about exhaust and energy consumption , and calculates the exhaust lists of three cities and the energy lists both in 2010 and in 2030 based on comprehensive analyses of every related factor ; provides reasonable suggestions about the ev industry development of our country by contrasting the policies of developing the ev about foreign developed countries ; finally , establishes relevant countermeasures by analyzing the developing environment in hubei province 通过对我国汽车产业发展战略方位的分析，提出了适合我国汽车工业中长期技术规划要求的三种发展模式；通过建立汽车排放和燃油消耗的数学模型，对汽车保有量，各种车型百分比、年平均行驶里程，汽车排放因子等各种相关因素的分析分别计算出2010年和2030年的汽车燃油消耗清单和选定的三个典型城市的汽车排放清单，论证了我国发展电动汽车的必要性；同时对世界发达国家发展电动汽车的相关政策作了比较详细的分析，通过对比比较并借鉴发达国家在电动汽车产业化及商业运行支撑政策等方面的经验，提出适合我国电动汽车产业发展的相关支撑政策。
We have combined qualitative analysis and quantitative analysis to foresee the market size . firstly , we found the relative factors influencing the truck market through qualitative analysis and picked up several main factors by quantitative analysis , such as highway mileage , social fixed assets investment capital and consumption expenditure , etc . secondly , we set up four models by using those factors . the four models are a time series model , a multiple regression model , a factor regression model and an integrated model 首先,通过定性分析找到了影响我国载货汽车保有量的相关因素,接着又进一步进行定量的分析,从而确定了公路里程数、基本建设固定资产投资额和我国社会消费支出额等为主要影响因素;然后,利用前面的分析结果构造了三个模型,即时间序列模型、多元回归模型和因子回归模型,并综合几个模型的优点建立了一个综合的预测模型,这一部分也是全文的重点部分;最后,分析比较了各模型的优劣并给出了每个模型的适用情况。
