7641| 12
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求助:扇形噴嘴的角度與壓力的關系 |
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點評
謝謝呀
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點評
是的
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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