Unverified90% confidenceDecision RuleTime unknown
臂带尺寸必须匹配臂围：标准臂带适合22-32cm，臂围＞32cm需选加大臂带（32-42cm）或购买宽幅款，臂带过小会导致读数系统性偏高，是家庭测量最常见的误差来源
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