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《拖拉机汽车驾驶员》2011,(7):232-235
Corporation 公司近日推出了首款采用Google(谷歌)Chromium OS的桌面电脑Xi3,该产品 体积仅有4×3.7×3.7英寸(1英寸=2.54cm)大,除Chromium操作系统外也可以支持其它基于X86架构的操作系统,并且,用户在购买时还可以根据自己的需要调整配置。 相似文献
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《拖拉机汽车驾驶员》2014,(9):246-249
1 LA SPORTIVA Onyx GTX Woman徒步鞋 户外徒步,有时候会需要几个小时的连续行走,在一定强度的运动下,双脚很容易出汗。无论是来自外界的雨水还是内部的汗气,都会让鞋内变得潮湿,不仅影响行走的舒适感,还可能造成脚部受伤。而采用GORE-TEX 内里的户外鞋可以提供持久防水和高度透气的卓越性能,在秋季户外徒步时很好的应对户外多变的天气,这些独特的功能均源自于蕴含GORE-TEX 品牌高端科技的GORE—TEX 薄膜,这层薄膜每平方厘米上超过14亿微孔,比水珠小2万倍比水分子大700信,使得外部的水无法渗入鞋子内部,同时又能将汗气完全排出,时刻保持鞋内的干爽和舒适。 相似文献
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Karuselli的故事有关雪。也许是名字比Alavr Alto拗口,他的芬兰后辈兼同行Yrj Kukkapuro名气差一大截,实际情况是Yrj Kukkapuro常常成为晚辈设计师极力推崇和效仿的名师。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(7):547-568
A set of scaling factors has been introduced by Pacejka [Pacejka, H.B., 2002, Tyre and Vehicle Dynamics (Oxford: Butterworth Heinemann Editions)] into his Magic Formula tyre model to take into account the influence of a number of external overall parameters such as road roughness, weather conditions, suspension characteristics and so on. These scaling factors are important for a correct prediction of tyre–road contact forces, but are not a function of the tyre itself. Changing the point of view, one could say that scaling factors should remain constant for different tyres on the same circuit, with the same weather conditions and with the same car. After characterizing different tyres through indoor tests (that do not consider external overall parameters) and after having identified Pacejka’s coefficients with scaling factors equal to one, several outdoor experimental tests have been carried out to assess the influence of vehicle and road surface conditions on scaling factors. These experimental data allowed us to identify, through a minimization approach, the ‘best’ set of Pacejka’s scaling factors for that vehicle and for that tyre on that track. Scaling factors for equal track and vehicle but different tyres were compared to check whether their values remained constant. To access the validity of scaling factors, a comparison between experimental data, collected on an instrumented passenger car, and MB simulations considering unity and identified scaling factors’ values, were carried out. All experimental data shown in this article come from tests carried out within the VERTEC project, a European founded research project (Task 2.a and 2.b) that puts together knowledge coming from vehicle manufacturers (Volvo, Porsche and Centro Ricerche Fiat CRF), tyre manufacturers (Pirelli and Nokian Tyres), control logic manufacturers (Lucas Varity GmbH), road maintenance experts (Centres d’Études Techniques de l’Équipement CETE), transport research organizations (Transport Research Laboratory TRL, Swedish National Road and Transport Research Institute VTI) and universities (Helsinki University of Technology HUT, Politecnico di Milano and University of Florence UNIFI). 相似文献
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《中国汽车(英文版)》2006,(7)
1. Development course Trailers refer to semi and full trailers. And in China the majority most of them are semi-trailers, similar to those in the US and most European countries. Full trailers found their use in China in the 1950’s and they began to be re… 相似文献
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《中国汽车(英文版)》2005,(6)
The fleet started operation at the Line 121 of Beijing on June 21. The program is also part the demonstration of all-electric buses in China. The opening ceremony was attended by 100 representatives of the Ministry of Science and Technology (MoST), the National Development and Research Commission (NDRC), the State Bureau of Environmental Protection, the local governme nt departments and other walks of life. MA Songde, the vice science minister and FAN Boyuan, vice mayor of Beijing … 相似文献
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《中国汽车(英文版)》2006,(2)
“The heavy truck market in 2005 was extremely dim, in sharp contrast to the hot situation in the previous year,” said WANG Wenyu, deputy manager of Sinotruck. The latest figures show the market declined for the first time in the past 8 years. Dongfeng H… 相似文献
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《中国汽车(英文版)》2005,(10)
There are now 35 percent special purpose vehicles in China, compared to 80 percent in the advanced countries. A report made by CAAM in 2004 stated that there are 620 special purpose vehicle makers in China and they will produce a total of 1,500 kinds and 700,000 vehicles in 2005. 1. Unable to develop hi-tech products and key parts are dependent on import As most of the vehicles can not find wide use in the market, they demand huge money in developing. As a result, a lot of makers have to co… 相似文献
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众所周知,汽车的动力来自将热能转变成机械能的发动机,因此发动机也被称为热机。内燃机是热机的一种,其特点是液体或者气体燃料与空气在机 相似文献
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《中国汽车(英文版)》2005,(11)
1. A prediction of the auto market based on the economy in 2005 The auto industry is still the hot spot in 2005. Its economic efficiency is improving further; its agriculture moves towards positive direction, with supporting policies from the central government being practiced; it is drawing increasing foreign direct investment; residents are receiving growing pay. All these are the basic conditions for China’s auto industry. ·Heavy industrialization is speeding up. Over the recent years, i… 相似文献
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our editor 《中国汽车(英文版)》2006,(5)
According to statistics from the Ministry of Commerce, China exported a total of more than 170,000 automobiles (including CKD) in 2005, worth nearly USD 1.6 billion. The export list included more than 30,000 cars, 1,844 offroaders, 10,000 tour buses, 6,43… 相似文献
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《中国汽车(英文版)》2006,(1)
China’s auto market has been experiencing tougher times since 2004 which marked the 20th anniversary of the joint venture moves and rapid growth. A series of problems has emerged: a fiercer market, reduced development space, a lack of self-owned brands a… 相似文献
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《中国汽车(英文版)》2007,(2)
The NDRC, China’s top-level national economy watchdog, has recently issued a circular on tackling excess factory capacity. The document details 6 measures, in particular to limit newly proposed car projects, raise the admission threshold and advocate 相似文献
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《中国汽车(英文版)》2007,(6)
The 2007 Shanghai Auto Show attracted thousands of exhibitors, but not FAW Group or Dongfeng Group. A lot of people felt disappointed at being unable to witness more shinning cars and pretty young ladies. It is said that Dongfeng Group has decided to attend no other events than the Beijing and Wuhan shows. FAW’s choices are Beijing and the Changchun Motor Show. 相似文献