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随着科技生产力和新型能源的开发进步,汽车行业的发展受到了较大的冲击,对传统的汽车设计技术进行变革和创新,是促进汽车行业发展的重要途径。模块化技术作为分解实现特定系统功能的重要形式,将其应用到汽车底盘设计设计中对汽车行业的发展具有积极的意义。文章对汽车底盘模块化设计技术研究与应用的重要性进行阐述,重点分析汽车底盘模块化设计技术研究与应用。旨在为汽车底盘模块化技术的设计及应用提供助力,促进模块化技术在汽车行业的应用和发展。 相似文献
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新能源汽车为我国汽车行业实现可持续发展做出转变。现阶段出现的相关汽车技术已具备一定模式,各类新能源汽车已出现于我国的道路交通运输行业中。就此现状展开分析,主要分析内容为三类新能源汽车技术,结合此类技术中的难点予以分析,望能够为相关行业做出参考,使我国汽车行业中的相关技术得到进一步发展。 相似文献
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随着人们生活水平的提高和生产力的飞速发展,汽车也从过去的奢侈品开始走进千家万户,在科技发展的同时汽车技术也取得了突飞猛进的发展,越来越多的新技术开始应用于汽车。文章对机电液一体化技术进行介绍,阐述该技术应用于汽车后,在汽车行业所取得的重要改变,机电液一体化技术应用于汽车为人们的出行增添了便利,为汽车行业的发展注入了活力。 相似文献
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市场化的发展带动了汽车行业的发展,汽车行业要想在激烈的市场环境中实现可持续发展,就要不断提升技术水平,加强自动化设备及现代化技术的发展,只有这样,才能确保汽车行业的健康发展。文章从理论的角度分析汽车总装工艺技术的应用及发展趋势,希望促进汽车行业的发展,扩大企业行业的市场。 相似文献
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随着人们物质生活水平的提升,汽车行业的发展也因为上涨的汽车销量而得到了推动,与此同时,汽车行业对于汽车专业人才的需要也越来越大,而为了能够满足现实需求,高校也必须要对汽车行业人才培养模式进行一定的改革,汽车技术服务与营销专业一体化教学模式就是为了培养高素质和高技能人才而提出的教学模式,能够帮助学生锻炼专业能力,也能够增强学生的就业优势。文章主要围绕汽车技术服务与营销专业一体化教学模式进行分析和探讨。 相似文献
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汽修专业实践操作技能关键点的研究对于我国当前汽车行业发展而言非常重要,高素质汽修技术人才是汽车行业发展的技术保障。文章从实践操作技能关键控制点内涵出发,提出了几点汽车维修专业实践操作技能关键控制点探索性建议。 相似文献
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近几年,随着我国经济经济的快速发展,汽车行业也得到了很大的发展。在汽车行业中,汽车模具制造技术中五金模具冲压工艺已经逐渐成为行业内研究的焦点内容。文章将主要对汽车冲压模具的设计和技术做出分析,并根据现如今五金模具冲压技术的应用来讨论其中所存在的一些问题,最终提出一些合理性建议。 相似文献
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Overland water and salt flows in a set of rice paddies 总被引:1,自引:0,他引:1
E. Playn O. Prez-Coveta A. Martínez-Cob J. Herrero P. García-Navarro B. Latorre P. Brufau J. Garcs 《Agricultural Water Management》2008,95(6):645-658
Cultivation of paddy rice in semiarid areas of the world faces problems related to water scarcity. This paper aims at characterizing water use in a set of paddies located in the central Ebro basin of Spain using experimentation and computer simulation. A commercial field with six interconnected paddies, with a total area of 5.31 ha, was instrumented to measure discharge and water quality at the inflow and at the runoff outlet. The soil was classified as a Typic Calcixerept, and was characterized by a mild salinity (2.5 dS m−1) and an infiltration rate of 5.8 mm day−1. The evolution of flow depth at all paddies was recorded. Data from the 2002 rice-growing season was elaborated using a mass balance approach to estimate the infiltration rate and the evolution of discharge between paddies. Seasonal crop evapotranspiration, estimated with the surface renewal method, was 731 mm (5.1 mm day−1), very similar to that of other summer cereals grown in the area, like corn. The irrigation input was 1874 mm, deep percolation was 830 mm and surface runoff was 372 mm. Irrigation efficiency was estimated as 41%. The quality of surface runoff water was slightly degraded due to evapoconcentration and to the contact with the soil. During the period 2001–2003, the electrical conductivity of surface runoff water was 54% higher than that of irrigation water. However, the runoff water was suitable for irrigation. A mechanistic mass balance model of inter-paddy water flow permitted to conclude that improvements in irrigation efficiency cannot be easily obtained in the experimental conditions. Since deep percolation losses more than double surface runoff losses, a reduction in irrigation discharge would not have much room for efficiency improvement. Simulations also showed that rice irrigation performance was not negatively affected by the fluctuating inflow hydrograph. These hydrographs are typical of turnouts located at the tail end of tertiary irrigation ditches. In fact, these are the sites where rice has been historically cultivated in the study area, since local soils are often saline-sodic and can only grow paddy rice taking advantage of the low salinity of the irrigation water. The low infiltration rate characteristic of these saline-sodic soils (an experimental value of 3.2 mm day−1 was obtained) combined with a reduced irrigation discharge resulted in a simulated irrigation efficiency of 60%. Paddy rice irrigation efficiency can attain reasonable values in the local saline-sodic soils, where the infiltration rate is clearly smaller than the average daily rice evapotranspiration. 相似文献
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瓦房店市是我国重要的水果生产基地,在国内水果生产领域占有重要地位。随着水果市场化的不断深入,如何满足和适应国内外市场需求成为瓦房店市水果生产的关键问题。从瓦房店市水果生产实际出发,阐述了实施水果生产标准化的必要性,提出了发展水果生产标准化的具体措施。 相似文献
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对引进的谷子新品种金谷子耐旱TG118进行品种比较试验和多点试种。结果表明:该品种抗旱、耐瘠、适应性强,稳产、高产、抗病抗风抗倒伏强,品质优良,粮草兼用,种植简单,省工易管;一般产量在6000kg/hm2以上,比当地主栽品种增产20%以上。最高产量达9450kg/hm2,适于在辽西北地区推广应用。 相似文献
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对《种子法》存在问题的探讨 总被引:1,自引:0,他引:1
李鹏 《农业机械化与电气化》2011,(6):129-130
《种子法》是我国种植业第一部法律。自实施以来,为依法加强种子管理提供了有力的法律支撑,促进我国种子产业发生翻天覆地的变化。但随着依法管理工作的深入和种子产业的快速发展,《种子法》及配套规章的一些问题逐步显现出来。对《种子法》及配套规章存在的问题进行深入分析,对需要进一步补充的章节以及需要调整的内容进行深入探讨,以求更加完善和明确。 相似文献
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About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered. 相似文献
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在新世纪,面对机遇和挑战,党的十六大把“社会更加和谐”作为全面建设更高水平的小康社会的一个重要目标。中国人素有社会和谐的理想;西方人自古也向往社会和谐;借鉴东西方两种和谐社会思想的经验、教训,构建社会主义和谐社会理论。 相似文献
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在介绍粉质仪和拉伸仪结构和原理的基础上,探讨了粉质曲线中吸水率、形成时间、稳定时间、弱化度和评价值等指标与面粉品质的关系,以及如何根据拉伸曲线中面团最大拉伸阻力、延伸度和拉伸曲线面积等指标来评价面团品质,并结合生产实际,概述了粉质仪和拉伸仪在面粉生产中的作用。 相似文献
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车辆ABS控制算法的研究及探讨 总被引:1,自引:0,他引:1
对现代汽车的ABS控制算法作了一些简单的介绍,同时指出了它们的一些缺陷,相应地提出了几种对ABS的其它控制方法并加以探讨,其中着重论述了ABS门限值控制算法中参考车速的确定方法和基于附着系数的控制算法。 相似文献
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工厂化养殖是现代水产养殖的必然发展趋势,需要重点解决的问题是连续不间断地监测并控制养殖水质.为此.提出了一个远程在线自动测控系统方案,实现并成功应用于水产养殖基地.经实践证明,此系统是一个结构简单、低投入高产出、实用价值较高的工厂化水产养殖远程自动测控系统. 相似文献