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单词 umbras
释义

umbras

听听怎么读
英 ['?mbr?z]
美 ['?mbr?z]
是什么意思
  • n.

    本影,暗影,蚀时的地球( umbra的名词复数 );

  • 英英释义

    umbra[ '?mbr? ]

    • n.a region of complete shadow resulting from total obstruction of light
    学习怎么用

    权威例句

    UMBRAS
    Enhancing NGST Science: UMBRAS
    UMBRAS: a matched occulter and telescope for imaging extrasolar planets
    The Structure of Sunspot Umbras. I. Observations.
    Imaging planets about other stars with UMBRAS
    Emission of Hydromagnetic Waves from Sunspot Umbras.
    Small scale phenomena in umbras and penumbras - The role of convective processes
    Oscillations in sunspot umbras due to trapped Alfven waves excited by overstability
    Imaging planets about other stars with UMBRAS: target acquisition and station keeping
    Motions in solar magnetic tubes. III - Outward wave propagation in sunspot umbras
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