| 单词 | energy-dispersive |
| 释义 | > as lemmasenergy-dispersive energy-dispersive adj. designating an instrument which is able to detect and measure the energy spectrum of X-rays emitted by a sample; (also) designating techniques in which the detection and measurement of an X-ray energy spectrum is used to analyse the composition of a sample.Such techniques rely upon the characteristic relationship between the composition of a material and the energy spectrum of the X-rays it emits when stimulated by a given source of excitation, such as when bombarded by high-energy electrons in a scanning electron microscope.Cf. quot. 1968, in which energy-dispersion is used attributively in the same sense. ΚΠ 1968 Science 2 Feb. 528 (title) Solid-state energy-dispersion spectrometer for electron-microprobe X-ray analysis.] 1970 Science 7 Aug. 519 (advt.) As you read this ad, 37 per cent of all U3 owners have added our energy dispersive x-ray analysers. 1990 D. Ackerman Nat. Hist. Senses iv. 204 Using EDAX (energy dispersive X-ray spectroscopy), they showered a fragment of a cello with high-energy electrons, which allowed them to analyze the wood's ingredients. 2001 R. W. Cahn Coming of Materials Sci. vi. 228 An ‘energy-dispersive’ analyser..uses a scintillation detector with an electronic circuit to determine the quantum energy of the signal. 2006 New Yorker 13 Mar. 89/1 In 2003, researchers re-tested surviving metal samples with energy-dispersive X-ray spectrometry. < 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。