| 单词 | protoplanetary disk |
| 释义 | protoplanetary disk[ prō′tə-plăn′ĭ-tĕr′ē ] A rotating disk of dust and gas that surrounds the core of a developing solar system. It may eventually develop into orbiting celestial bodies such as planets and asteroids. See more at planetesimal. Words nearby protoplanetary diskprotopectin, protophilic, protophloem, Protopic, protoplanet, protoplanetary disk, protoplasm, protoplasmic astrocyte, protoplast, protopodite, protopope The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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