[問題] 問這個拋物線定規的用途
這是KUM的拋物線定規,我不是專業的製圖人員,
想不太出來在怎樣的情境派得上用場
http://ppt.cc/3RrL
有勞諸位
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◆ From: 218.161.81.195
※ allengx9900:轉錄至看板 Interior 01/11 18:13
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