单词：mendelevium (md)
钔（人造放射性元素）
单词：mendelevium (md) 相关文章
SHENYANG, Nov. 17 (Xinhua) -- A MD-90 aircraft left the northeastern city of Shenyang for its American home on Thursday, ending the service of the last McDonnell-Douglas jet for Chinese airlines. Chinese carriers will no longer operate MD-made jets d
发表于:2019-02-06 / 阅读(67) / 评论(0)
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