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3075| 10
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扭簧和棘輪,是如何相互配合實現(xiàn)隨拉隨停的? |
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點評
贊同
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點評
花一二十塊網(wǎng)購一個卷簾,拆開看看。實踐出真知。
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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(wǎng)安備33038202004372號 )
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