k keyboard perforator中文什么意思

键盘穿孔机

• k:     K, k (pl. Ks ...
• perforator:    n. 1.穿孔器，凿孔机；剪票铗；【 ...
• keyboard perforator:    键盘穿孔机; 键盘穿孔器; 键盘打孔 ...