It also discussed the material and machining technics scheme of toothed plate,which have very important directions meaning for production-ma...
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并在本文中著(zhù)重論述了齒板的材質(zhì)及加工工藝方案,對類(lèi)似產(chǎn)品的生產(chǎn)制造、尤其是批量生產(chǎn)具有十分重要的指導意義。
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国内精品美女A∨在线播放xuan