铸铁划线平台使用磨损后，可以重新修刮恢复其精度。
Cast iron crossed platform, can use wear to restore its precision.
雷达天线电机炭刷由于长时间使用磨损严重，接触不良。
The motor carbon brush of radar antenna has been worn seriously due to long time service. It can not touch really.
产品在使用过程中，电镀色自然磨损属正常现象，出现电镀色正常使用磨损，表面划伤及人为损坏的不予退换。
It is normal that the electroplated color fades after use. Products of electroplate abrasion and scratch caused artificially can not be returned or exchanged.
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