[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

电动真空罐真空度可达-60kPa以上,比手动泵(约-30~-40kPa)保鲜效果更强,适合存放易氧化的坚果、咖啡豆和茶叶;但需充电或换电池,静置成本更高

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