| 单词 | heat-ray |
| 释义 | > as lemmasheat-ray heat-ray n. ΚΠ 1866 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art (new ed.) II. 102/2 Heat Rays,..applied to the red rays of the spectrum, and to other rays which fall outside the red end of the spectrum, and which are consequently invisible. 1887 H. M. Ward tr. J. von Sachs Lect. Physiol. Plants xxxix. 696 The least refrangible heat-rays. < as lemmas |
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