- specific extinction
- 比消光系数
Medical Chinese dictionary (湘雅医学词典). 2013.
specific extinction
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Extinction (astronomy) — Extinction is a term used in astronomy to describe the absorption and scattering of electromagnetic radiation by matter (dust and gas) between an emitting astronomical object and the observer. Interstellar extinction also called Galactic… … Wikipedia
Extinction — [ thumb|The Dodo, shown here in a 1651 illustration by Jan Savery, is an often cited example of modern extinction.cite book | last = Diamond | first = Jared | authorlink = Jared Diamond | title = Guns, Germs, and Steel | publisher = date = 1999|… … Wikipedia
Extinction du Trias-Jurassique — L extinction du Jurassique ou extinction T J est une extinction massive qui s est produite à la fin du Trias, il y a environ 200 Ma. Près de 20% des espèces marines, les Crurotarsi les plus importants, une grande partie des Therapsida et les gros … Wikipédia en Français
extinction — 1. In behavior modification or classical or operant conditioning, a progressive decrease in the frequency of a response that is not positively reinforced; the withdrawal of reinforcers known to maintain an undesirable behavior. See conditioning.… … Medical dictionary
Late Devonian extinction — … Wikipedia
Ecological extinction — Types and definitions of extinctions = Estes, Duggins, and Rathburn (1989) recognize three distinct types of extinction.Global extinction is defined as “the ubiquitous disappearance of a species. [Estes et al. The ecology of extinctions in kelp… … Wikipedia
Human extinction — is the end of the human species. Various scenarios have been discussed in science, popular culture, and religion (see End time). The scope of this article is existential risks. Humans are very widespread on the Earth, and live in communities… … Wikipedia
Holocene extinction — The dodo, a bird of Mauritius, became extinct during the mid late seventeenth century after humans destroyed the forests where the birds made their homes and introduced mammals that ate their eggs. The Holocene extinction refers to the extinction … Wikipedia
Holocene extinction event — [ thumb|right|150px|The Dodo, a bird of Mauritius, became extinct during the mid late seventeenth century after humans destroyed the forests where the birds made their homes and introduced animals that ate their eggs.] The Holocene extinction… … Wikipedia
ademption by extinction — n. An ademption of some specific or unique property that occurs when the property is destroyed, given away, or sold or does not otherwise exist at the time of the testator s death. Webster s New World Law Dictionary. Susan Ellis Wild. 2000 … Law dictionary
coefficient — 1. The expression of the amount or degree of any quality possessed by a substance, or of the degree of physical or chemical change normally occurring in that substance under stated conditions. 2. The ratio or factor that relates a quantity… … Medical dictionary
