Unverified80% confidenceTradeoffTime unknown
袋壁厚度与柔软度呈权衡关系:厚壁(约0.4mm以上)密封更牢、耐扎,但难以完全排空空气、折叠收纳占地;薄壁柔软好排气、易站立,但反复冷冻后易在折痕处开裂
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