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把打印针头部分浸在无水酒精中,当堆积的油灰软化后,在一张白纸上打印(不要色带),此时打印机就会把油灰等杂物喷出来。反复操作数
Immerse the print needle tip in anhydrous alcohol. When the accumulated putty softens, print on a piece of white paper (without the ribbon) and the printer will blow out the putty and other debris. Repeated operands