Iron meteorites most likely come from the center of a large asteroid, one big enough that metals fell to the center via gravity.
铁陨石最有可能来自一个大的小行星的中心部分,一个足够大的金属通过引力作用而下降至其中心。
单词 | Iron meteorites |
释义 |
Iron meteorites
原声例句
Crash Course 天文篇 Iron meteorites most likely come from the center of a large asteroid, one big enough that metals fell to the center via gravity. 铁陨石最有可能来自一个大的小行星的中心部分,一个足够大的金属通过引力作用而下降至其中心。 美国历史频道纪录片《宇宙》 Researchers speculate the iron meteorite that made that impact, stretched for more than 60 miles before it crashed into the surface. 研究人员推测可能是铁质小行星的剧烈撞击,在撞击地表前伸展到超过60英里大。
英语百科
Iron meteorite![]() Iron meteorites are meteorites that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite. Iron meteorites originate from planetary cores of planetesimals. The iron found in iron meteorites was one of the earliest sources of usable iron available to humans, before the development of smelting that signaled the beginning of the iron age. |
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