单词 | magic angle |
释义 | > as lemmasmagic angle magic angle n. Physics and Chemistry (in NMR spectroscopy) the angle (measured relative to the direction of the magnetic field) of an axis around which a solid sample can be spun such that interactions of its nuclei average to zero, namely 54° 44′, or tan−1√2. ΚΠ 1965 Physical Rev. A. 140 1261/2 Equation (3) shows that at the ‘magic angle’ θ = cos−1(1/√3), (5) the second moment in the rotating frame vanishes. 1992 Jrnl. Physical Chem. 96 389/1 Samples were spun at the magic angle at rates of up to 3kHz. < as lemmas |
随便看 |
英语词典包含1132095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。