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单词
spectroscopic binary
释义
spectroscopic binary
n.
（名词）
A binary star system that is identified by periodically shifting lines in its spectrum.
周期性变换其光谱谱线的双星系
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rightish
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right-side up
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right-to-die
right-to-know
right-to-life
right-to-lifer
right-to-work law
right triangle
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更新时间：2025/8/12 18:29:39