Unverified85% confidenceDecision RuleTime unknown
1.8×2.0米双人床独立筒弹簧数量达到900-1200个属正常水平，宣称超过2000个多为缩小弹簧直径实现，直径过小(＜4cm)反而支撑力下降，弹簧数量并非越多越好
1
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85%
Confidence
Long-term
Relevance
-
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Unverified独立袋装弹簧的弹簧数量（以标准1.5m×2m计）通常在600-1200个区间，数量越多分区越精细承托越均匀，低于500个的所谓独立弹簧支撑分散度不足85% similarUnverified展开宽度≥1.9m且带独立被子架的X型或翼型晾晒架才能真正平铺双人被，普通1.5m以下的机型只能对折搭晾，被子干得慢且易发霉73% similarUnverified展开长度约2.7m，相比部分竞品（如3.6m以上规格）偏短，大面积包裹（如大腿全长石膏）时可能需要多卷73% similarUnverified投射比决定摆放灵活性：投射比1.2:1的机型投100英寸需约2.6米距离，短焦(0.8:1以下)机型1.5米内即可投100英寸，小房间/床头投墙需选短焦或超短焦72% similarUnverified测量马桶盖内圈长×宽两个尺寸，O型盖常见规格为40-48cm长，通用款标注可拉伸弹性带的适配范围通常±3cm，超出则边缘翘起易滑动72% similar
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