| 单词 | nuclear magnetic resonance |
| 释义 | > as lemmasnuclear magnetic resonance nuclear magnetic resonance n. Physics the absorption of electromagnetic radiation by a nucleus having a magnetic moment when in an external magnetic field, used mainly in the spectroscopic investigation of molecular structure and in diagnostic body imaging; abbreviated NMR. ΘΚΠ the world > matter > chemistry > atomic chemistry > [noun] > nucleus > resonance exhibited by nuclear magnetic resonance1942 the world > matter > physics > atomic nucleus > [noun] > field of energy > magnetic resonance resonance1938 nuclear magnetic resonance1942 1942 Physica 9 591 (heading) Negative result of an attempt to observe nuclear magnetic resonance in solids. 1965 J. R. Dyer Applic. Absorption Spectroscopy Org. Compounds p. vii Ultraviolet, infrared, and nuclear magnetic resonance spectroscopy are among the more important techniques that the organic chemist now uses. 1987 T. Wolfe Bonfire of Vanities ix. 195 If this had been a middle-class white kid, they'd have gone over him with the X-ray, the CAT scan, the nuclear magnetic resonance, everything there is. < as lemmas |
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