Unverified88% confidenceDecision RuleTime unknown
购买前需按'长×宽×床围高'三个尺寸下单，而非仅看1.5m/1.8m床型标称；同为1.8m床，床垫宽度可能是180cm或200cm，误差超5cm会导致松紧无法收拢
1
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88%
Confidence
Long-term
Relevance
-
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Unverified购买前需确认床架内径尺寸而非外径，部分床架标称1.8m是外框尺寸，内部实际卡床垫空间可能仅1.78m或超出1.82m，导致床垫卡不进或四周有缝隙92% similarUnverified购买尺寸需比床垫大30-40cm以保证两侧下垂，1.8米床（垫宽180cm）配200×230cm被子，1.5米床配200×230或180×220cm92% similarUnverified尺寸选购需按床垫实际标准：1.5m床垫为150×200cm，1.8m为180×200cm，选套时长宽各留2-3cm余量便于套入，过紧会撑裂拉链92% similarUnverified床单实际尺寸需比床垫每边多出30-40cm用于掖边和覆盖床垫厚度，1.8m床垫（厚≥20cm）应选245×250cm规格，直接买床垫标称尺寸会盖不住92% similarUnverified标准床垫尺寸对应床架内径需预留：1.5m床垫选内径1.52-1.53m床架，过紧塞不进，间隙>3cm则床垫会移位91% similar
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