Unverified85% confidenceDecision RuleTime unknown
重力滤水系统（挂袋式）无需手动泵压，2-4L上袋可无人值守过滤，流速约0.5-1L/min，适合3人以上营地长时间取水，但装置较重且需悬挂点
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Long-term
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Unverified重力袋式(gravity filter)无需手动施压，靠水重力自流过滤，适合营地大量储水但需悬挂等待，单次可处理2-10L；不适合行进中即时补水90% similarUnverified重力式净水器（挂袋自流）流速慢约0.5-1L/分钟但无需体力，适合营地多人用水；吸管式即滤即饮但只能个人使用无法储水；泵压式流速快约1.5L/分钟但需持续操作费力88% similarUnverified重装徒步（负重＞3天）优先选择挤压式软水袋滤水器（如Sawyer Squeeze类），整机＜100g；轻量化速通选吸管式直饮（＜60g）；营地多人共用选重力式（1-4L水袋悬挂静置过滤）85% similarUnverified吸管式滤水器（如LifeStraw个人版）流量约1.5-3L/min但需俯身直饮无法储水；重力袋式（如Sawyer/Katadyn BeFree袋装）可批量过滤并倒入水瓶，适合团队和做饭83% similarUnverified重力过滤系统需要脏水袋容量≥4L才能保证足够水压驱动，容量＜2L的重力袋出水速度会显著下降至涓流状态83% similar
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