Duplicating

(p. pr. & vb. n.) of Duplicate

手打:利奥波德

• A very important feature in record-making, from a commercial standpoint, is in means for cheaply duplicating records. Edward W. Byrn. 十九世纪发明进展.
• Another United States patent, covering a method of duplicating or copying sound records, was granted to Charles Sumner Tainter in 1886. 佚名. 神奇的知识之书.
• It consisted of many milling machines and other tools for duplicating. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• By the process of electrotyping, plates of metal duplicating exactly the printing surface of the type and engravings in the original page, can be made. 佚名. 神奇的知识之书.
• In making a somewhat radical change of subject, from duplicating machines to cement, we find ourselves in a field in which Edison has made a most decided impression. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

手打:利奥波德