[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

弹簧长度选择:洗手盆存水弯堵塞3-5米足够,厨房下水道横管建议5-10米,深度堵塞或主立管需10-15米,长度不足无法触及真正堵点

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85%
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Long-term
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