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聲波振動探測冬筍方案的討論 |
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點評
聲源呢?會不會挖到冬眠的小動物?
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Archiver|手機版|小黑屋|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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