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小軸承的晃動(dòng)是基于設(shè)計(jì)考慮還是質(zhì)量問題? |
評(píng)分
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點(diǎn)評(píng)
是的,,這里至少有四大問題。社會(huì)上,,好像什么人都能設(shè)計(jì),,不說了。
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