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penumbra    音标拼音: [pɪn'ʌmbrə]
n. 半影

半影

penumbra
n 1: a fringe region of partial shadow around an umbra


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  • Penumbra Inc | Innovating Healthcare Technologies
    Penumbra is a global healthcare company that is focused on innovating novel technologies to help as many people as possible Learn how our latest innovations are transforming patient care Penumbra’s commitment to saving patient lives is chief among our values
  • Umbra, penumbra and antumbra - Wikipedia
    The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object of lesser size In cases of equal or smaller impinging objects, only an umbra and penumba are generated
  • PENUMBRA Definition Meaning - Merriam-Webster
    The meaning of PENUMBRA is a space of partial illumination (as in an eclipse) between the perfect shadow on all sides and the full light How to use penumbra in a sentence
  • Eclipse Shadow: What Is the Penumbra? - timeanddate. com
    The penumbra is the lighter outer part of a shadow The Moon's penumbra causes partial solar eclipses, and the Earth's penumbra is involved in penumbral lunar eclipses
  • PENUMBRA | English meaning - Cambridge Dictionary
    PENUMBRA definition: 1 a part of a shadow in which only some of the light is blocked, used especially about a shadow… Learn more
  • PENUMBRA Definition Meaning | Dictionary. com
    Penumbra definition: the partial or imperfect shadow outside the complete shadow of an opaque body, as a planet, where the light from the source of illumination is only partly cut off See examples of PENUMBRA used in a sentence
  • Penumbra, Inc. Announces Completion of Enrollment for Landmark STORM-PE . . .
    Penumbra, Inc (NYSE: PEN), the world's leading thrombectomy company, announced the completion of enrollment in the STORM-PE clinical trial The pivotal, prospective, multi-center randomized
  • Difference Between Penumbra and Umbra
    “Penumbra” and “umbra” are terms pertaining to the parts of shadows Basically, the umbra is the darkest area while the penumbra is the lighter region which is found at the perimeter
  • Products | Penumbra Inc
    Questions? Contact us to learn more about our products and company
  • penumbra - Wiktionary, the free dictionary
    penumbra (plural penumbras or penumbrae or (obsolete) penumbræ) A partially shaded area around the edges of a shadow, especially an eclipse The other places see the penumbra of the moon's shadow fall on the earth, so the eclipse is partial, and part of the sun's disc is still visible





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