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并合吸积模型
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并合吸积模型
Encyclopedia
理学
银河系形成
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merger and accretion model
并合吸积模型
一种早期的银河系形成模型。它认为银河系是由许多质量约为1亿个太阳质量的气体团块先独立演化成小的恒星系统,然后这些小的恒星系统再相互碰撞、并合形成的。
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International Tribunal for the Law of the Sea
international tropical timber agreement
International Tropical Timber Organization
international trusteeship
International Trusteeship System
International Tunnelling Association
International Ultraviolet Explorer
International Undertaking on World Food Security
international uniform substantive law
International Union for Conservation of Nature
International Union for Conservation of Nature and Natural Resources
International Union for the Protection of New Varieties of Plants
International Union of Amateur Astronomers
International Union of Architects
International Union of Forestry Research Organization
International Union of Geodesy and Geophysics
International Union of Laboratories and Experts in Construction Materials,Systems and Structures
International Union of Materials Research Societies
International Union of Non Professional Cinema
International Union of Psychological Science
International Union of Pure and Applied Chemistry
International Union of Pure and Applied Physics
International Union of Radio Science
International Union of Railways
International Union of Revolutionary Writers (IURW)
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