Unverified80% confidenceFactTime unknown

护膝尺码按膝盖中心上方约15cm处大腿围测量，而非膝盖围度；偏紧2cm过度压迫致麻木，偏松则支撑失效并下滑

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80%

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Unverified护膝尺码需按膝盖中心上方约15cm处的大腿围测量，而非直接看鞋码或身高，护膝偏紧比偏松更实用，偏松几乎起不到固定作用92% similar Unverified尺码测量以膝盖上方15cm处大腿围为主要依据，而非膝盖本身周长；护膝偏松会在骑行震动中下滑失去防护位置91% similar

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