| 单词 |
armalcolite |
| 释义 |
armalcolite Min.|ɑːˈmælkəʊlaɪt|
[f. the names of the three U.S. astronauts Neil Armstrong, Edwin Aldrin, and Michael Collins who brought the sample from the moon + -ite1.]
An orthorhombic titanate of magnesium and iron, (Mg,Fe2+)Ti2O5, first discovered in lunar rocks.
1970A. T. Anderson et al. in Proc. Apollo 11 Lunar Sci. Conf. I. 55 Armalcolite (Fe0·5Mg0·5Ti2O5), a new magnesium-rich opaque oxide related to the pseudobrookite series, was discovered independently by six research groups in their examination of different samples of the lunar material collected from Mare Tranquillitatis. Ibid. 56 Armalcolite is opaque, gray and distinctly pleochroic. 1973Times 28 Sept. 7/5 Moon samples of armalcolite..were first analysed in the United States in 1969. Armalcolite has been since found in great abundance on the Moon's surface by the Apollo 17 astronauts. 1975Physics & Chem. of Earth IX. 305 The first terrestrial occurrence of armalcolite..is reported from DuToitspan [in South Africa]. 1978Pasachoff & Kutner University Astron. xiv. 398 (caption) A crystal of armalcolite..examined under a polarization microscope. |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容：
相关热词搜索：armalcolite英英词典英英释义英语词汇意思用法释义英语
字词 总排水沟 释义 【医】 main drainage ditch 汉译英翻译词典收录405719条汉英翻译词条，基......