| 单词 | time-of-flight |
| 释义 | > as lemmastime-of-flight time-of-flight adj. Physics designating techniques and apparatus that depend on the time taken by particles to traverse a set distance, typically in the separation of ions according to their mass. ΘΚΠ the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > types of spectrometry or spectroscopy > [adjective] > involving time calculation time-of-flight1945 time-resolved1948 1945 H. D. Smyth Gen. Acct. Devel. Atomic Energy Mil. Purposes xii. 131 One elegant scheme for studying the effects of neutrons of a single, arbitrarily-selected velocity is the ‘time of flight’ method. 1948 Physical Rev. 74 622/2 (heading) A time-of-flight mass spectrometer. 1990 Metals & Materials July 435/1 To obtain direct information about surface chemistry, a time-of-flight secondary ion mass spectrometer..has been commissioned. 2005 Philos. Trans. (Royal Soc.) A. 363 2157 This time-of-flight method makes it possible to separate the contributions of different velocity classes. < as lemmas |
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