(noun.) a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts.
安东尼编辑
双语例句
Discovery of Neon and Metargon by Ramsey and Travers; Coronium by Nasini; Xenon by Ramsey; Monium by Crookes, and Etherion by Brush. Edward W. Byrn.十九世纪发明进展.