常見(jiàn)例句雙語(yǔ)例句The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed.討論了雙星是否是產(chǎn)生鋇星的必要和充分條件，因?yàn)橐阎赖匿^星系統(tǒng)全是雙星。 返回 barium star