Perforator

[pә:fәreitә]

解释:

(n.) One who, or that which, perforates; esp., a cephalotome.

整理:拉尔夫

例句:

This was done in a special machine of Edison's invention, called a perforator, consisting of a series of punches operated by a bank of keys--typewriter fashion. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

整理:拉尔夫

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