| 单词 | to spin down |
| 释义 | > as lemmasto spin down to spin down 1. transitive. Biology. To centrifuge so as to cause the separation of components. ΘΚΠ the world > life > biology > laboratory analysis > processes > [verb (transitive)] > centrifugation techniques to spin down1947 1947 L. V. Ackerman & J. A. Del Regato Cancer xiv. 817 The fluid is spun down and sectioned. 1965 Proc. National Acad. Sci. U.S.A. 54 400 A unit of blood was drawn into a heparin receiving pack and spun down slowly for 15–20 min. 1978 Sci. Amer. Dec. 30/2 If the unbonded cells are then spun down into a mixed-up mass and given fluid containing antibiotics and the right salts, new hydras form in a few days. 2. intransitive. Astronomy. Of a rotating body, esp. a star: to rotate more slowly, usually because of decreasing angular momentum. Also transitive. ΘΚΠ the world > the universe > star > stellar motion > rotate [verb] to spin down1967 to spin up1967 1967 Nature 24 June 1297/2 The boundary layer suction causes a slow internal motion which stretches vortex lines and spins down the solar interior. 1967 Nature 24 June 1299/1 The region itself spins down quickly. 1976 Sci. News 30 Oct. 280 This pulsar is spinning down so slowly that when the effects of its motion across the sky on its apparent (to us) spin rate are considered, it may actually be spinning up from the point of view of someone riding along with it. 1979 Nature 22 Feb. 602/2 Any loss of radiation from the region will transport vast quantities of angular momentum away from the rotating body. The reaction back on the body itself will cause it to spin down. < as lemmas |
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