望遠鏡的常識 - 生活
By Ethan
at 2005-08-09T00:00
at 2005-08-09T00:00
Table of Contents
想買20x50倍望遠鏡 不知20與50各有何義 ?若是觀月觀流星觀天文 至少的倍數要多少?賞鳥ㄉ倍數呢 ?
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生活
All Comments
By William
at 2005-08-09T15:03
at 2005-08-09T15:03
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