重汽豪泺2012版ZZ1257N4048W(EGR)型罐车线束图解

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GT V8 S：宾利全新欧陆 巅峰体验极致

传承赛道基因，382kW和8挡变速器的组合带来酣畅淋漓的驾驶感受，宾利家族经典外观设计与精湛手工工艺完美结合，宾利超豪华双门跑车欧陆GT V8 S亮相上海F1国际赛车场。     

长安沃尔沃S40

对谁放电：受宠的太太们 不知是不是巧合，买沃尔沃S40的车主大都是“太太”。她们的先生或开宝马、或开奔驰、路虎，而太太们则是选择红色的S40。其实这种选择也不无原因。太太们选车一看外形、二看安全、三看个性。沃尔沃S40全中。开着红色S40的幸福女人们，是受宠而安全的，这也正是成功的丈夫愿意看到的。     

钢轨如何分类

钢轨除按尺寸区分外，还可以按照钢种、力学性能、金相组织等划分。 按钢种划分，钢轨可以分为碳素轨、合金轨和热处理轨三种：碳素轨是用自然原铁矿石冶炼轧制的钢轨，主要利用矿石中的碳、锰元素提高钢轨强度。我国生产的碳素轨为高锰中碳轨。合金轨是在原铁矿石中加入适量的合金元素如钒、钛、铬、钼之后，冶炼轧制而成的钢轨。这种钢轨的钢轨强度和韧性要高于碳素轨。     

既有图数字化过程中换带地段的处理

详细阐述了在Ｍｉｃｒｏｓｔａｔｉｏｎ环境下对地形原因进行数字化时换带地段的处理方法和操作流程。     

防止SS4改型机车在牵引工况下制动电阻带烧损的措施

针对SS4改型机车在牵引工况下因牵制开关不转换引起的问题，对线路接触器控制电路进行相应改造，杜绝因此造成的机破、临修。     

INVESTIGATION ON FRACTAL CHARACTERISTICS OF WORN SURFACES OF POLYMER TAPES BY SAND DUST PARTICLES

Objective To characterize the abrasive wear of polymer tapes in ATM （Auto Teller Machine） servicing in sand dust environment. Aethods The abrasive wear experiment of polymer tapes, PEN （polyethylene-2, 6-naphthalenedicarboxylate） and PI （polyimide）, by sand dust particles is performed in ATM tribosystem. The fractal characteristics of the worn surface of polymer tapes and the corresponding wear mechanisms are examined. ReSults As main results, the worn surfaces of polymer tapes show bi-fractal characteristics, and PI tape shows higher fractal dimensions and finer wear profiles than PEN tape. Wear mechanism examination shows macro and micro ploughing and cutting grooves and micro fracture characters, which gives reasonable explanation of bi-fractal character of worn polymer tapes. Conclusion Worn polymer tape shows fractal character and bi-fractal can be used in accurately characterizing the abrasive wear of polymer tapes of ATM in sand dust environment.