英语词汇“x-ray background”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	x-ray background
释义	x-ray background x-ray background [′eks ‚rā ′bak‚grau̇nd] (astronomy) Diffuse, almost isotropic x-radiation from beyond the solar system, believed to be the summed contribution of many unresolved sources. See XRB See XRB
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英语词典包含2567994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。