[KongchangAI]
Unverified90% confidenceTradeoffTime unknown

防水性能与顺滑度之间存在根本性权衡:PU 涂层赋予防泼水/防浸能力,但同时造成拉合阻力增大;若仅需防锈而非防水,选用普通 YKK 不锈钢或铝合金拉链顺滑度更佳。

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