wire brush()
A、钢丝刷
B、平板刷
C、废棉纱
D、敲锈锤
A、钢丝刷
B、平板刷
C、废棉纱
D、敲锈锤
A、small wire brush B、compressed air jet C、clean dry cloth D、10% solution carbon solvent and water
A、A.reduce current pulsations B、B.reduce brush chatter C、C.prevent uneven commutator wear D、D.allow greater power generation