1603| 19
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測(cè)距機(jī)構(gòu)中彈簧作用是什么 |
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點(diǎn)評(píng)
+1
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點(diǎn)評(píng)
連接,?實(shí)物是直接連上用的嗎,,還是模型桿子那個(gè)接觸位置有對(duì)應(yīng)的避讓孔
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