Unverified85% confidenceDecision RuleTime unknown
柠檬酸粉需按1:20~1:10比例溶于温水（40-60℃）使用，温度过低溶解慢、过高（＞80℃）会加速挥发降低效果；液体成品除垢剂已配好浓度但单价高、性价比低
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