Unverified83% confidenceDecision RuleTime unknown
管道内有积水时优先选择固体颗粒或粉末剂型,因其密度大能沉入水下直达堵塞点;液体剂型会被积水稀释漂浮,作用于堵塞面的有效浓度大幅下降
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83%
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Long-term
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