Unverified85% confidenceDecision RuleTime unknown
外置式封口机真空度普遍在-60到-80kPa之间，无法达到腔体式的-90kPa以上，对于需要长期冷冻保鲜（3个月以上）的肉类，真空度应≥-70kPa才能有效延缓氧化和冰晶损伤
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Unverified抽真空能力看真空度指标，家用外抽式真空机真空度达到-80kPa以上才能有效延长冷冻肉类保鲜期；-60kPa及以下只适合干货食品短期防潮87% similarUnverified家用外置式封口机真空度达到-60kPa至-80kPa即可满足绝大多数干货和肉类保鲜需求；追求液体食材或长期冷冻保鲜可选真空度≥-85kPa的机型86% similarUnverified外置式封口机真空度普遍在-60~-80kPa，腔体式（Chamber）可达-90kPa以上，需长期保存生肉海鲜或做低温慢煮预处理应选腔体式86% similarUnverified外置式封口机真空度普遍在-60~-80kPa，腔体式（内置式）可达-90kPa以上，需长期保存生肉、需极致抽真空或做sous vide低温慢煮的建议选腔体式85% similarUnverified外置式封口机真空度普遍在-60~-80kPa（约0.6~0.8个大气压），无法达到腔体式的-90kPa以上；追求长期冷冻保鲜（6个月以上）或商用需求应选腔体式82% similar
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