Unverified80% confidenceDecision RuleTime unknown
边缘防塌陷通常有三种方案：加密弹簧、边缘高密度海绵围边、钢丝加固框，海绵围边最常见但3-5年易塌，钢丝框或加密弹簧的边缘支撑更耐久，适合经常坐床边者
1
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80%
Confidence
Long-term
Relevance
-
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