1、The negative carbon brush damage often occurs in operation.
運行中負極電刷易受損傷。

2、Start with the motor protection. carbon brush failure and use of time tips.
具有馬達啟動保護，碳刷故障及使用時間顯示。

3、The carbon brush sees to be misaligned. Please check it again.
碳刷似乎未對準，請再檢查一下。

carbon brush翻譯