[請問] 橡皮擦與鉛筆硬度/黑度關係:－線上遊戲排行榜2013,線上遊戲排行榜2014巴哈,最新線上遊戲排行榜2013巴哈,

Sep 07 Sat 2013 19:34
[請問] 橡皮擦與鉛筆硬度/黑度關係:

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[請問] 橡皮擦與鉛筆硬度/黑度關係

Sep 7th 2013, 10:05, by Yellowmen

一般文具店購買的普通橡皮擦(如蜻蜓牌)
擦拭乾淨的程度與鉛筆的硬度H和黑度B有關嗎?

如果要讓紙張保持清潔不要容易被弄髒(擦拭時不容易有鉛筆碳粉的痕跡)
使用哪種硬/黑程度的鉛筆會比較好?

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