A.長(zhǎng)約50mm,錐度為1:20,大端比管孔大0.025~0.05mm B.長(zhǎng)約40mm,錐度為1:25,大端比管孔大0.025~0.05mm C.長(zhǎng)約40mm,錐度為1:20,大端比管孔大0.025~0.05mm D.長(zhǎng)約50mm,錐度為1:25,大端比管孔大0.025~0.05mm
A.專(zhuān)用工具捻打銅齒 B.銼刀修銼 C.錘頭捻打 D.刮刀研刮
A.涂鍍 B.車(chē)修 C.研刮 D.較直