請問這張圖肉眼能分辨熱浸鍍鋅嗎? - 土木

By Necoo
at 2016-05-12T15:44
at 2016-05-12T15:44
Table of Contents
http://i.imgur.com/KkxxSrj.jpg
如圖所示
請問專業的人
這張圖片能肉眼辨識裡面有沒有熱浸鍍鋅嗎?
廠商很肯定的告訴我這個沒有
不知板上有專業的能為我解說嗎?謝謝
還是一定要拿去分析化驗才能確定呢
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土木
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