相对地地下铁汽车的新不锈钢类型，如此为接近地在门之前仅仅响的铃命名。
Relatively new stainless-steel type of subway car, so named for the bell that rings just before the doors close.
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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