an apparatus for the electrical transmission of pictures
electrical device used for etching by electrolytic means
electrograph详细解释
e.lec.tro.graph n.（名词）An electrically produced graph or tracing.电示图：以电制作的图表或映描图Equipment used to produce such a graph or tracing in facsimile transmission.传真电报机：传真通信中用以制作这样的图表或映描图的设备
