震动常常引起自行车许多零件的松动。
铲状螺栓以一种紧密、牢固和经济的方式固定零件，解决螺丝容易松动的问题，提高组装的效率。
Spade bolts provide a compact, strong and economical means of locating and retaining parts or assemblies in position. They eliminate the need for loose screws and facilitate assembly operations.
摩托车减震器撞击异响可分为因零件松动、零件破损或变形、零件弯曲和液压性能不良等类型。
The causes of abnormal knocking of motorcycle shock absorber include parts loosening. Parts failure or deformation, parts bending, poor hydraulic performance and so on.
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