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apr 23, 11 - APP檢查標靶是否有定位 APP對40cm處對焦 & 拍照， 然後取得相片中雷射點位置 & A4的3個角落點
Added to timeline:
24 Oct 2017
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cabration3
Date:
apr 23, 11
Now
~ 2014 years ago
