3795| 7
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如何設計播種機的排種器?---請教 |
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恩,是的,就是現在的碩士研究課題,氣吸滾筒式精密排種器
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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