滑板

The special tribo-electdc tester with high sliding speed and electric current was developed,which mail working parameters are, current density up to 2.5 A/mm~2, the sliding speed 100 m/s,the load over 500 N (3.2 MPa) and the pulsant strike pressure within 20 N. This testersuccessfully simulates the tribological and electric properties of strip materials. 2, By using the above tester, study on tdbological properties and carrying currentperformances of copper-base powder metallurgy material and metal impregnation carbonmaterial are carded out.

本论文开展的主要研究内容和所取得的成果如下： 1、首次开发了大电流、高速度和重载荷的载流摩擦磨损专用试验机，能够稳定提供恒定交流电流密度2.5 A／mm~2，相对滑动速度100 m／s(12000 r／min)，载荷可达500 N(3.2MPa)，脉动冲击载荷可达20 N，为研究提速接触网和滑板的高速载流摩擦学特性及其机理，以及开发新型高耐磨性、高载流性能滑板材料提供了先进可靠的试验手段(该机已获得一项实用新型专利，ZL 2006 2 0096036.5)。

The wettabilities of CuSn alloy and Fe are so high that accelerate the alloying process of sintering so as to improve greatly the strength,hardness and notch toug...

其中当Fe增加到15%时，冲击韧性达20.6 J/cm2，抗拉伸强度为163.2 MPa，布氏硬度为53.8，达到和超过了TB/T1842.1-2002电力机车粉末冶金滑板铁道行业标准，为高速列车受电弓滑板提供了新的材料。

The Insured carries on diving, water-skiing, skiing, roller-skating, sliding, scooting, gliding, parachute jumping, climbing sports, or exploration activities

被保险人进行潜水、滑水、滑雪、轮滑、滑板、滑板车、滑翔翼、跳伞、攀岩运动或探险活动

Where was the concept of skateboards and skateboarding developed?

如果是的概念，滑板和滑板发达？

Many skaters have a long skateboarding experience often like customize skateboards by themselves and have fun in it.

许多选手还有很长滑板经验往往喜欢定制滑板本身并享受其中的乐趣了。

Outfits for skateboarders are also available, with a wide range of skateboards clothes to choose from.

全套的滑板也可与滑板衣服的广泛选择。

Choosing the most suitable skateboards clothes is easy if you start browsing the catalog of an online snowboarding shop.

选择最合适的滑板衣服很容易，如果你开始浏览的目录在线滑板店。

In the streets, you can see people walk skateboards to school, work, travel many people rely on skateboards.

在街头，你可以看到人们踩着滑板上学，上班，许多人出行都依赖滑板。

The bracket's sliding plate used as the rolling mill's spindle in the light-medium section workshop of the Bar Plant was transformed three times after its imported sliding plate lost efficacy,but not showing satisfactory effect.

棒材厂中小型车间轧机接轴使用的托架滑板长期受到磨擦力与冲击力的作用，在进口滑板失效后先后进行三次国产转化，未取得满意效果。

The machine component claimed in claim 1, in which the second mounting means comprises a toggle bracket fixed with respect to the base plate, a toggle lever located above the slide plate and pivotally mounted to said toggle bracket about afirst axis, the toggle bracket having a plurality of attachment openings at different spacings from said first axis, a clevis bracket affixed to the slide plate, a toggle link pivotally mounted at one end to said clevis bracket and pivotally mounted atthe other end to said toggle bracket at one of said plurality of openings, constituting a second axis spaced from said first axis, one part of said assembly being pivotally mounted to said toggle bracket at a third axis spaced from said first axis,whereby the spacing of the second axis from the first axis can be adjusted by selecting a different opening, and whereby the second and third axes are spaced at different distances from said first axis.

机器组件索赔要求1，其中第二次安装的手段包括一个切换支架方面的底板，上面一个切换杠杆的滑板位于pivotally安装固定谈及afirst轴切换括号，括号有一个切换扣押开口多元化，从不同间距表示，第一轴，一个羊角支架贴在滑板，一个切换链接pivotally在一端说，羊角安装支架和pivotally安装atthe的另一端说，在一个多元切换支架开口说，构成间隔从第二轴表示，第一轴，其中的一部分被pivotally说集会上说安装在从间隔三分之一轴切换括号表示，第一轴，即从第一轴，第二轴间距可以通过选择一调整不同的开放，即第二和第三轴是从不同的距离间隔表示，第一轴。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。