ball pen和roller pen有什么区别

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ball pen和roller pen有什么区别
ball pen和roller pen有什么区别

ball pen和roller pen有什么区别
两种笔都是滚珠笔尖,但roller pen的笔墨是水性的,ball pen的笔墨是油性的

really?

Rollerball pens are writing instruments which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous inks found in ballpoint pen. The characterist...

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Rollerball pens are writing instruments which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous inks found in ballpoint pen. The characteristics of these less viscous inks, which tend to saturate more deeply and more widely into the paper than other types of ink, give rollerball pens their distinctive writing qualities.

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