| 单词 | carbonaceous chondrite |
| 释义 | > as lemmascarbonaceous chondrite carbonaceous chondrite n. Astronomy a granular, stony meteorite of a rare kind containing a significant proportion of carbon and organic compounds and also water; cf. chondrite n. 2.Carbonaceous chondrites are thought to consist of ancient, pristine material condensed from the nebula which formed the solar system. ΚΠ 1904 H. A. Ward Catal. Ward-Coonley Coll. Meteorites 99 The classification which we have adopted in this catalogue is that of Dr. Aristides Brezina, of Vienna... Carbonaceous Chondrite (K). Dull black, friable Chondri with free carbon and of low specific gravity, metallic iron nearly or wholly wanting. 1964 Science 19 June 1475/2 The assumption [is] that carbonaceous chondrites represent the groups of meteorites altered least from the original aggregations of cosmic dust particles forming all meteorites. 2003 B. Bryson Short Hist. Nearly Everything (2004) xix. 356 The meteorite was of a rare type known as a carbonaceous chondrite, and the townspeople helpfully collected and brought in some 90 kilograms of it. < as lemmas |
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