1957| 19
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測距機構中彈簧作用是什么 |
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點評
+1
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點評
連接?實物是直接連上用的嗎,還是模型桿子那個接觸位置有對應的避讓孔
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小黑屋|手機版|Archiver|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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