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INK-FOLLOWING PLUNGER FOR BALLPOINT PEN AND METHOD FOR MAKING SAME
INK-FOLLOWING PLUNGER FOR BALLPOINT PEN AND METHOD FOR MAKING SAME
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机译:圆珠笔的追墨柱塞及其制造方法
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摘要
Ink-following plunger for ballpoint pen consists of a stable gel of specified hardness. Ink-following plunger for ballpoint pens is formed from a stable gel with a hardness as measured by cone penetration of 10 - 40 mm.
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