When shoes slide across a floor, wave-like deformations of the sole can generate squeaking. The pitch of the squeak depends on the rate at which deformations are generated.
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近日，华语著名歌手王力宏身穿米色衬衣低调现身深圳坪山比亚迪总部，在比亚迪多位核心高管的陪同下深度参观，并为现场员工送上祝福，人气爆棚，现场气氛十分热烈。