- 缓冲: buffer; cushion; slow down a ...
- 键盘: fingerboard; keyboard; clavi ...
- 穿孔机: punching machine; piercing m ...
- 键盘穿孔机: k keyboard perforator; key puncher; keyboard punch; keypunch
- 有缓冲器的键盘穿孔机: buffered keypunch
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