8825| 5
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滾齒刀頭數(shù)的不同,,對齒輪有什么影響?頭數(shù)是根據(jù)什么選擇的,? |
點(diǎn)評
齒輪這嘎達(dá)不好玩呀,! 學(xué)習(xí)了,! 今后多指教!
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