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Broad felt-tipped pen for e.g. painting or calligraphy has outer barrel with inner thread and guide engaging with refill cartridge
Broad felt-tipped pen for e.g. painting or calligraphy has outer barrel with inner thread and guide engaging with refill cartridge
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机译：广泛的毡尖笔，例如绘画或书法作品的外枪管带有内螺纹，导向装置与笔芯配合
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摘要
A broad felt-tipped pen for e.g. painting or calligraphy has an outer barrel around a replaceable color cartridge. The outer barrel has an inner thread that engages with an outer thread on the color cartridge. The barrel has an inner guide (30) corresponding with the cartridge as it turns on insertion.
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