abrasion marks

It has been discovered that (1) in the region between 100 ℃～350 ℃ the friction coefficient is lowering along with the rising of temperature; (2) the friction coefficient is the highest at the temperature of 500 ℃, and adhesive wear occurred; (3) the global graphite grain layer appeared at the surface of wear scar at 450 N and 300 ℃, and played an extremely good effect of lubricati.

发现 :(1)在 10 0℃～ 3 5 0℃区间 ,随温度的升高 ,摩擦因数在降低 ;(2 )在 5 0 0℃时 ,摩擦因数最高 ,且发生了粘着磨损 ;(3 )在 45 0N ,3 0 0℃时 ,磨痕表面出现了球状的石墨颗粒层 ,这起到了极好的润滑作用 ,使得 3 0 0℃时 ,磨损较低。

The wear scar after 15 000 cycles was analyzed by SEM.

在PlintTE77高温疲劳试验机上对该材料进行了高温磨损性能测试 ,工况分别为 :室温 ,10 0℃ ,2 0 0℃ ,3 0 0℃ ,3 5 0℃ ,5 0 0℃ ;法向载荷为 :2 0 0N ,45 0N ,等12种工况 ;振动频率为 :4Hz ;移动幅值为 :± 5mm ;并对摩擦后的磨痕进行了SEM分析 ,发现 :(1)在 2 0 0N ,3 0 0℃时出现了粘压的多源弧形裂纹 ,这和冲击时的沿树枝晶裂纹截然不同 ;(2 )在 45 0N ,3 0 0℃时 ,磨痕表面出现了球状的石墨颗粒层 ,这起到了极好的润滑作用 ,使得 3 0 0℃时磨损较低。

The formation and evolution of ridges of the wear scar in soft materials have been studied.

利用自行研制的多功能微磨损试验机,研究了软材料的微磨损问题,如Cu、Al、镁合金、45钢等,并与硬度相对较高的Ni60B涂层和TiN涂层进行对比,描述了软材料磨痕形貌中隆脊的发生及发展过程,讨论了隆脊的形成机理,分析了隆脊形成的影响因素,并提出了软材料微磨损试验的优化试验条件。

were scratches left by the grinder?

磨镜工留下的磨痕。

Micro-wear test of soft materials(Ⅰ)--Wear scar measurement and wear rate calculation

软材料的微磨损测试研究(Ⅰ)——磨痕测量与磨损率计算

Micro-wear test of soft materials(Ⅱ)--ridge formation and influencing factors

软材料的微磨损测试研究(Ⅱ)——有脊磨痕的形成及其影响因素

The Study of Wear Scar Measurement System Based on Image Processing;

基于图像处理的磨痕快速测量系统研究

Using Electric Brush Electroplate to Repair Grinding Crack of Eectromotor rotor axis

利用电刷镀方法修复电动机转子轴磨痕

Further Discussion on the Correlation between Friction-Induced Squeal and Surface Topography with and Without Squeal Under Metal Reciprocating Sliding;

金属往复滑动条件下摩擦噪声与磨痕形貌关系的探讨

The striated and polished surfaces are called slicken-sides.

有条痕的磨光面则称为擦痕面。

To deface by covering with marks.

磨损，毁损因痕迹斑斑而受损伤

Remove the scratches on the hook point using a fine emery paper.

请用细砂纸或锉刀研磨旋梭尖的伤痕。

The spiral nebulae were scratches left by the grinder.

螺旋状的星云是研磨者所留下的痕迹.

War has left its mark on the country.

战争给该国留下了不可磨灭的痕迹.

THE CLINICAL ANALYSIS ON 2400 CASES OF ACNE SCAR TREATED BY DERMABRASION

磨削术治疗痤疮瘢痕2400例临床分析

Check for scores, nicks or burrs on the rack piston finished surfacSlight wear is normal on the worm gear surfaces.

检查齿条活塞抛光表面是否有刮痕、刻痕或磨擦。涡轮表面的轻微磨损是正常的。

Every time he accelerates, he likes to burn rubber.

每次他突然加速，路面上都会留下磨擦的痕迹。

It was by no means a new car and showed evidence of a good deal of wear and tear.

这辆汽车不是新车，多处磨损的痕迹就是证明。

Modeling and Simulation of Scratches during the Process of Ultra-Precision Plane Grinding;

超精密平面研磨划痕形成的建模与仿真

Experimental Study of Soil Surface Scratch and Particles Impacting Abrasion

土壤表面划痕与颗粒碰撞磨蚀实验研究

Gear mark/streak:A dark colour line across the printed sheet.A defect caused by worn gears or dirts gathered on gears of a press cylinder.

墨条痕：横过纸面的一条深色墨痕。是印刷机上的圆筒齿轮因磨蚀或污物堆积所引致的故障。