| 单词 | germanium |
| 释义 | germanium Chem.|dʒəˈmeɪnɪəm|
[mod.L., f. Germānus German a.2]
A hard, brittle, semi-metallic element, greyish-white in colour, which has chemical properties intermediate between those of silicon and tin and is used esp. as a semiconductor in transistors and other solid-state devices. Atomic number 32; symbol Ge.
1886Athenæum 13 Mar. 364/2 Prof. Clemens Winkler, in the Berichte of the Berlin Chemical Society, describes a new element—to which he has given the name of ‘Germanium’—in a mineral named Argyrodite..Germanium appears to take a place between antimony and bismuth. 1948Bell Lab. Record XXVI. 323/1 In semi-conductors, such as silicon and germanium,..there may be as few as one current-carrying electron for every million atoms. 1954H. R. Harner in C. A. Hampel Rare Metals Handbk. ix. 163 Commercial recovery of germanium has..been chiefly from zinc ores, germanite, and flue dust (from coals). Ibid., Production of germanium in England was started in 1950. 1955Sci. News Let. 19 Feb. 119/3 The germanium transistor, versatile little crystal substitute for the radio tube. 1959[see argyrodite]. 1970D. F. Shaw Introd. Electronics (ed. 2) xi. 236 To manufacture a P–N junction diode using germanium, the crystal is grown from N-type germanium (i.e. germanium with arsenic or antimony as impurity). |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容11：
相关热词搜索：germanium英英词典英英释义英语词汇意思用法释义英语
字词 第二审法院 释义 【法】 court of second instance 汉译英翻译词典收录405719条汉英翻译......
单词 tura 释义 tughra, turavarr. toughra.{var l=document.getElementsByTagName("link");var ......
字词 等时值的 释义 【医】 isochron 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了全......
字词 等倍数 释义 equimultiple 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了全部常用......
字词 等同周期 释义 【化】 identity period 汉译英翻译词典收录405719条汉英翻译词条，基本涵......
单词 germanity 释义 † germanity1 Obs.[ad. L. germnittem, f. germnus german1.]The quality ......