天使
piq - online pixel art drawing app 有 一位大學教授,在物理考卷出一條他認為很滿意的考題:「有條老問題:『有多少隻小天使能在一根繡花針的針頭飛舞?』用以下的資料回答這問題:每隻小天使要有一個方圓和一顆金原子相同的圓圈跳舞。針頭是平面圓形,平面面績等於十萬顆銀原子的面績。請清楚寫明所有piq is a fun, easy-to-use online pixel art program with a number of cool unique features. It's designed to let you create and share great pixel art, logos or favicons quickly and easily. As well as the program itself, there is a gallery where you can uplo...
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