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brown dwarf

/ˌbraʊn ˈdwɔːf/
  • 棕矮星:一种天体物体,比普通恒星要小得多,并且质量不足以维持核聚变,但温度足够高以至于能够辐射能量,尤其是红外波长的能量。

双语例句

  1. Astronomers have named the brown dwarf "WD 0806-661 b".
    天文学家将这颗“褐矮星”命名为“WD 0806 - 661 B”号。
  2. Even the brown dwarf COROT-3b (22 MJ) is estimated to be about the volume of Jupiter.
    甚至褐矮星corot - 3b(22倍木星质量)的估计体积也与木星相差无几。
  3. The star is a brown dwarf - and formed, like other stars, out of a cloud of dust and gas.
    这颗恒星是褐矮星――像其他恒星一样,外部由尘埃和气体云构成。

网络短语

  • proto-brown dwarf
    原褐矮星
  • sub-brown dwarf
    外存在一个亚褐矮星
  • brown dwarf star
    棕矮星
  • brown dwarf desert
    褐矮星沙漠
  • brown dwarfbrown dwarf star
    棕矮星

英英释义

  • Brown dwarfs are substellar objects too low in mass to sustain hydrogen-1 fusion reactions in their cores, unlike main-sequence stars, which can. They occupy the mass range between the heaviest gas giants and the lightest stars, with an upper limit around 75 to 80 Jupiter masses (MJ).