Unverified80% confidenceTradeoffTime unknown
扩香仪分超声波雾化和无水冷雾式：超声波款需加水稀释精油、香味柔和适合过夜，无水扩香器直接雾化纯精油、香味浓烈持久但适合短时定时（30-60分钟）避免过浓
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80%
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Long-term
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Unverified超声波香薰机的雾化片工作频率通常在1.7-2.4MHz，纯精油（未加水）会腐蚀雾化片，必须选择支持水氧扩散的机型或改用无水香薰机（冷雾扩香/纳米雾化）83% similarUnverified扩香浓度建议：约100平米空间用超声波扩香仪加3-5滴即可，睡前扩香30-60分钟后关闭，全夜扩香会因嗅觉疲劳失去效果且浪费精油82% similarUnverified扩香方式与持续时间权衡：超声波扩香范围广见效快但精油消耗快(每晚2-4滴)；被动藤条持续时间长(2-4周免维护)但扩香范围小，仅适合床头1米内的近距离助眠80% similarUnverified被动扩香（藤条/香薰石）安全无热无火但持续力弱、需2-3天补一次油且香型固定；超声波扩香范围广可换香但需清洗防霉，怕麻烦选被动，追求氛围选超声波80% similarUnverified气味持久度与释放形态强相关：气雾喷雾即时性强但仅维持1-2小时；凝胶/固体缓释可持续30-60天但强度递减；电动扩香/加热型香氛最稳定，适合需要恒定气味的客厅79% similar
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