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震動(dòng)比較大,螺絲容易松動(dòng),什么辦法可以擰緊,? |
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點(diǎn)評(píng)
有木有發(fā)現(xiàn)發(fā)動(dòng)機(jī)上的螺釘都是有彈簧墊圈的,。,。就是為了防松
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