The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed.

讨论了双星是否是产生钡星的必要和充分条件，因为已知道的钡星系统全是双星。

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The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed.

讨论了双星是否是产生钡星的必要和充分条件，因为已知道的钡星系统全是双星。

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