Unverified85% confidenceDecision RuleTime unknown
全包固定式沙发套需精确测量：单人位坐宽应在80-100cm、双人位140-160cm、三人位195-230cm，超出量表跨度需选大一号，否则拉不平会起皱鼓包
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Unverified全包款沙发套需按沙发『座宽+扶手厚度+靠背高度』三点测量，若座宽偏差＞5cm易松垮；万能弹力套适配的尺寸区间通常标注为『单人90-140cm、双人145-185cm、三人195-230cm』，超出上限选大一号避免绷不上92% similarUnverified全包式沙发套需精确测量沙发扶手宽度、坐深、靠背高度三个关键尺寸，扶手宽度＞30cm的宽扶手沙发极难买到通用款，优先选定制或专用型号85% similarUnverified坐垫宽度应比坐骨结节间距（IT宽度）宽约20-30mm。测量方法：坐在瓦楞纸上留下压痕，两凹陷中心间距即为坐骨宽度，多数男性110-130mm，女性120-145mm80% similarUnverified沙发坐深≥55cm适合躺靠半卧，坐深48-52cm适合正襟端坐；身高<160cm选坐深≤52cm，否则脚够不到地面悬空压腿80% similarUnverified亲子同坐（1大1小）建议选择尺寸≥180×200cm、厚度≥1.5cm的爬行垫，厚度＜1cm的垫子成人久坐会硌得慌且隔凉效果差79% similar
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