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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姜云涛以铁腕思路开出一剂猛药：砍低效、调结构、聚焦主业、重塑增长。是止血回稳，还是再造新高？，推荐阅读搜狗输入法2026获取更多信息
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