修理或调换电刷，用木砂纸清理整流子表面，并吹净。

Repair or replace the electric brush; clean the commutator surface by abrasive paper and blow it clean.

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修理或调换电刷，用木砂纸清理整流子表面，并吹净。

Repair or replace the electric brush; clean the commutator surface by abrasive paper and blow it clean.

youdao