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圖片上的這個(gè)螺母到底應(yīng)該擰在哪,? |
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點(diǎn)評(píng)
其實(shí)我覺(jué)得你說(shuō)的有道理,,因?yàn)檫@就是一個(gè)調(diào)節(jié)支腳,調(diào)好水平以后就不會(huì)輕易再動(dòng)他了
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