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敢問長徑比與振動(dòng)發(fā)聲幾率是否有一定的規(guī)律,?鋼制刀桿,硬質(zhì)合金刀桿分別是怎么樣的,?% R" Q4 N, U7 S) F @ t1 c
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* ?$ A: ]% b4 |0 L; J金屬切削刀具討論群:q群:260256732! c3 \# m" h, T" Q3 E8 Q0 e& B/ J
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