Unverified72% confidenceFactTime unknown
20寸折叠登机箱展开容量普遍在35-40升，因折叠结构占用空间，实际有效容量略小于同尺寸硬壳箱，装载规划时应预留
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72%
Confidence
Long-term
Relevance
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Unverified折叠包宣称的容量（如20L）在满载时会因面料软塌导致实际可用空间缩水20-30%，选购时按标称容量的0.7倍估算实际承载87% similarUnverified20寸登机箱内层净空约35×50cm，选压缩后尺寸不超过30×40cm的中号袋最贴合；直接买特大号（50×70cm）压缩后仍需折叠塞入，反而浪费空间87% similarUnverified天幕收纳袋容量应比天幕本体收纳后的体积大20%-30%，因收纳时难以像出厂那样极致压缩，同尺寸预留空间可容纳地钉、绳索、连接件87% similarUnverified干袋会预留卷口占用空间，标称容量（如20L）在卷紧密封后实际可用约14-16L；打包时应按标称容量的70%装填，否则无法卷够圈数导致密封失效85% similarUnverified20寸登机箱实际净空间约35-38L，扣除箱体壁厚，铝框因边框占位比同尺寸拉链箱少约2-3L容量85% similar
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