49w手電筒 - 戶外用品

By Genevieve
at 2021-07-03T21:23
at 2021-07-03T21:23
Table of Contents
最近家裡的手電筒壞了
然後在網路上看到一款亮度49w的手電筒
https://i.imgur.com/bZOJp6E.jpg

然後就很好奇 手電筒的亮度不都用流明來算的嗎
那這款手電筒的49w大概又等於多少流明呢?
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戶外用品
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