- long-period variation
- мат. длиннопериодная вариация
Большой англо-русский и русско-английский словарь. 2001.
long-period variation
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long-period variable star — ▪ astronomy any intrinsically variable star whose light fluctuations are fairly regular and require many months or several years to complete one cycle. They are, without exception, red giant and supergiant stars. Those in one fairly… … Universalium
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Darwin from Orchids to Variation — The life and work of Charles Darwin from the publication of Orchids to the publication of Variation during the years between 1860 and 1868 continued with Darwin carrying out his research and experimentation on evolution as he worked sporadically… … Wikipedia
Secular variation — The secular variation (or secular trend) of a time series is its long term non periodic variation, as opposed to its periodic variation. Of course, whether something is perceived as a secular variation or not depends on the available timescale:… … Wikipedia
Critical Period Hypothesis — See also: Language acquisition#Critical Period hypothesis The Critical Period Hypothesis refers to a long standing debate in linguistics and language acquisition over the extent to which the ability to acquire language is biologically linked to… … Wikipedia
Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… … Universalium
Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… … Universalium
Miss Lucy Long — also known as Lucy Long and other variants, is an American song that was popularized in the blackface minstrel show. A comic banjo tune, the lyrics, written in exaggerated Black Vernacular English, tell of the courtship or marriage of the male s … Wikipedia
