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And s is this lowercase notation l that the spectroscopists use in place of the l number.
而s这个小写字母,被光谱学家用来代替数字。
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- 来自原声例句
And s is this lowercase notation l that the spectroscopists use in place of the l number.
而s这个小写字母,被光谱学家用来代替数字。
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