Unverified75% confidenceFactTime unknown
很多弹簧床垫标注的'弹簧数'需结合床垫尺寸看密度，同时弹簧钢丝直径（线径）影响软硬：线径粗支撑硬，2.0mm偏硬，1.8mm适中
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75%
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Long-term
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