Unverified90% confidenceDecision RuleTime unknown
外置式（吸气式）真空机真空度通常在-60~-80kPa，适合干货和半湿食材；腔体式（Chamber）真空度可达-90~-95kPa，是处理汤汁、腌肉、真空低温烹饪(sous vide)的唯一可靠选择
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Unverified外抽式真空机的真空度用相对真空度衡量，家用机型能达到-60kPa到-80kPa即为优秀，-80kPa以上属于专业级，用于食材长期冷冻和低温慢煮（sous-vide）预处理91% 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88% similarUnverified外置式封口机真空度通常在-60~-80kPa之间，腔体式(chamber)可达-90~-98kPa，需要长期储存生鲜或做低温慢煮(sous vide)预处理选腔体式88% similarUnverified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86% 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85% similar
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