| 单词 | free-free |
| 释义 | > as lemmasfree-free free-free adj. (a) Mechanics designating a linear structure which can vibrate unconstrained at each end; (b) Physics relating to an interaction (usually emission or absorption of a photon) in which the particle concerned is free (not in a bound state) both before and after it. ΚΠ 1886 Amer. Jrnl. Math. 9 90 The vibrations of the surface are of exactly the same character as those of a free-free bar of length 2h. 1931 Proc. Royal Soc. A. 133 252 In the evaluation of the opacity and absorption coeefficients we have considered only the ‘free-free’ transitions. 1989 M. Longair in P. Davies New Physics vi. 96/1 The thermal radiation (or, more precisely, the free-free emission or bremsstrahlung) of hot electrons from regions of ionised hydrogen. 2001 Philos. Trans. (Royal Soc.) A. 359 2210 Modal analysis cannot be performed experimentally for free–free structures, due to the existence of the rigid-body motion. < as lemmas |
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