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accretion [æ'kri:ʃən]

n. 增大,添加,添加物

形容词：ac·cre'tion·ar'y, ac·cre'tive

an increase by natural growth or addition
[同] accretion, accumulation
something contributing to growth or increase
[例]
- he scraped away the accretions of paint
- the central city surrounded by recent accretions

　以下网页可能有助于你对本词条的理解：

Quasars have structure in it and we couldn't know that before, but now with our new microlensing technique, we can actually map the structure of quasar accretion discs. 查看全文
Xinyu Dai told Earth and Sky about measuring the size of the disk of debris - what's called the accretion disk - surrounding a black hole inside two quasars. 查看全文

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单词量 SuperStar