30CrMnSiA在内孔镗削加工中表面轮廓曲线变化规律研究
30CrMnSiA재내공당삭가공중표면륜곽곡선변화규률연구
Study on the Characteristics of Surface Profile Curves Obtained by High Speed Dry Boring Process of Steel 30CrMnSiA
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