沟痕 meaning in English

groove mark

When i was very young , i used to leave some imprints with my rake when the tides fell down . oh , what a wonderful experience and surprise
我小的时候，在潮水退去之时，我用耙在沙滩上画出一此沟痕，啊，妙极了，让我喜出望外
The surface rubbing technique has been commonly used for fabricating liquid crystal display panels by lcd industry . however , the rubbing process may cause electrostatic charge , dust or scratches that tend to destroy the display quality
然而在摩擦过程中会引起静电、尘埃造成成品率下降，最严重的是摩擦产生的沟痕使微显示器件的显示质量降低。
Overrunning clutch as output mechanism of pulse - type stepless transmission is friction roller - type mainly . because roller and output shaft contact with a higher pair , surface of output shaft appears groove mark obviously when repeated driving
脉动无级变速器的输出机构? ?超越离合器,目前主要是摩擦滚柱式超越离合器,由于滚柱与输出轴之间以高副接触,往复驱动下输出轴表面明显出现沟痕。