针式打印机是什么意思啊?
针式打印机:Impact Printers
Impact printers are the oldest print technologies still in active production。
Some of the largest printer vendors continue to manufacture, market, and support impact printers, parts, and supplies。
Impact printers are most functional in specialized environments where low-cost printing is essential。
The three most common forms of impact printers are dot-matrix, daisy-wheel, and line printers。
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