| 单词 | Umklapp |
| 释义 | Umklapp Physics.|ˈʊmklæp|
Also umklapp.
[tr. G. umklappprozess (R. Peierls 1919, in Ann. d. Physik III. 1073), f. umklappen to turn down or over.]
Used attrib. to designate interactions in a crystal lattice in which their total momentum is not conserved, and the momentum of the initial excitations is reversed. Abbrev. U- or u-process.
[1937Physical Rev. LII. 690/1 These authors neglect transitions due to the ‘Umklappprozesse’ of Peierls.] 1951Proc. R. Soc. A. CCVIII. 90 Further measurements made on a corundum crystal confirm the importance of the ‘Umklapp’ processes, postulated by Peierls, in causing thermal resistance. 1960J. M. Ziman Electrons & Phonons iii. 133 We shall refer to U-processes, and, where wave vector is conserved,..N-processes. 1974H. E. Hall Solid State Physics viii. 207 An Umklapp process can be thought of as one in which a phonon is Bragg reflected simultaneously with absorbing or emitting another phonon. 1975H. M. Rosenberg Solid State vi. 99 In a continuous medium u-processes cannot occur. 1976F. Cap tr. Busch & Schade's Lect. Solid State Physics 67 At low temperatures the umklapp processes are essential for the establishment of thermal equilibrium in the crystal. |
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：umklapp英英词典英英释义英语词汇意思用法释义英语
单词 glutless 释义 glutless, a. nonce-wd.[f. glut n.3 or glut v.1 + -less.]Insatiable.1787......
字词 粉刺性癌 释义 【医】 comedocarcinoma 汉译英翻译词典收录405719条汉英翻译词条，基本涵......
单词 glutiry 释义 glutiryvar. gluttery, Obs.{var l=document.getElementsByTagName("link");v......
字词 类比限制器 释义 【电】 analog limiter 汉译英翻译词典收录405719条汉英翻译词条，基本......
单词 Umkhonto we Sizwe 释义 ‖ Umkhonto we Sizwe, n. S. Afr.|umknt we sizwe|Also Umkonto w......
字词 粉体连续加料机 释义 【化】 powder continuous supplying machine 汉译英翻译词典收录4......