Unverified90% confidenceFactTime unknown

蓬松度（FP）比含绒量更能反映保暖效率：同样充绒量下，900蓬的羽绒服比600蓬更轻更暖，因为高蓬绒朵大、储存静止空气多

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羽绒服category

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Unverified800蓬鹅绒在同重量下保暖效率高，但充绒量因背心形态受限（无袖），整体保暖量不及同系列连袖款Down Sweater；FP高不等于整体更暖79% similar Unverified蓬松度(FP)决定保暖效率而非绝对温暖，同样保暖效果下800fp比600fp用绒量更少、更轻。判断标准：600fp入门、700fp日常、800fp以上高端户外78% similar

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