| 单词 | gamma |
| 释义 | Word Frequency gamma(ˈɡæmə) noun 1. the third letter in the Greek alphabet (Γ, γ), a consonant, transliterated as g. When double, it is transcribed and pronounced as ng 2. the third highest grade or mark, as in an examination 3. a unit of magnetic field strength equal to 10–5 oersted. 1 gamma is equivalent to 0.795 775 × 10–3 ampere per metre 4. photography, television the numerical value of the slope of the characteristic curve of a photographic emulsion or television camera; a measure of the contrast reproduced in a photographic or television image 5. (modifier) a. involving or relating to photons of very high energy a gamma detector b. relating to one of two or more allotropes or crystal structures of a solid gamma iron c. relating to one of two or more isomeric forms of a chemical compound, esp one in which a group is attached to the carbon atom next but one to the atom to which the principal group is attached Word origin C14: from Greek; related to Hebrew gīmel third letter of the Hebrew alphabet (probably: camel)Word Frequency Gamma(ˈɡæmə) noun (foll by the genitive case of a specified constellation) the third brightest star in a constellation Gamma Leonis |
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