[問題] 一些外套上的單位
最近網路上看到一些防水透氣外套介紹的
waterproof：20000mmH2O or higher
moisture permeability：4000g/m2/24hrs
: 20000g/m2/24hrs or higher (2 layers)
: 16000g/m2/24hrs or highrt (3 layers)
condensation ：5g/m2 or lower
water repellency ： 80 points or higher (after 100 wash cycles)
前兩個防水跟透氣性還看得懂
可是後兩個是甚麼意思呢?
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