serial dot matrix printer

例句：

1. 1. This serial dot matrix printer is very efficient for printing small documents.
   这台串行点阵打印机对于打印小文档非常高效。
2. 2.The serial dot matrix printer was used in the early days of computer technology.
   串行点阵打印机在计算机技术早期被使用。
3. 3.The serial dot matrix printer has become obsolete due to advancements in other types of printing technology.
   由于其他类型印刷技术的进展，串行点阵打印机已经过时了。