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為什么不用十字槽沉頭螺釘? |
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發(fā)表于 2013-2-23 20:25:03
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發(fā)表于 2013-2-24 15:03:05
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點評
嗯,裝配時都是先擰上螺釘,但不擰緊。裝完了再全部擰緊
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