“Electron tubes”的意思、由来-开放百科全书

词条	Electron tubes
释义	Seeelectron tube
随便看	Portrait of a Humanist Portrait of a Knight of Malta Portrait of a Lady Alexander Portrait of a Lady in Red Portrait of a Lady in White Portrait of a Lady (Klimt) Portrait of a Lady known as Smeralda Brandini Portrait of a Lady with a Squirrel and a Starling Portrait of Alfonso d'Avalos Portrait of Alfonso d'Avalos with a Page Portrait of Alphonse Leroy Portrait of a Man (Batoni) Portrait of a Man (Frans Hals, Frick) Portrait of a Man (Hans Memling) Portrait of a Man Holding Gloves Portrait of a Man in a Red Hat Portrait of a man in a Yellowish-gray Jacket Portrait of a man in red chalk (Leonardo) Portrait of a Man (Lotto) Portrait of a Man, probably a Member of the Van Beresteyn Family Portrait of a Man (Rembrandt, New York) Portrait of a Man (Selfportrait) Portrait of a Man (Titian) Portrait of a man with a beer jug Portrait of a Man with a Book

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。