Wear and tear tests of the treated specimen are made by Brinell wear test machine, and the relation between wear rate and mechanical property is set up.
以上处理的试样经磨损试验，得到了磨损率和机械性能的一些关系。
2
Protect public property. DO not scribble on the pages of books or tear them out.
爱护公共财物，不准在图书上乱涂乱画。不得撕毁书页。
3
Universal tensile machine can measure all kinds of materials, tensile, tear, peel, stick relay... Resistance property.