united national academy of sciences
...氟对居民健康影响的危险度评价 前言： 氟被世界卫生组织(WHO)和美国国家科学院(UNAS, United National Academy of Sciences)确定为可能的必需微量元素和必需的营养素;氟和其他微量元素一样,摄入不足和过量均可对人体产生不良影响,...
基于2个网页-相关网页
united national academy of sciences
联合国国家科学院
以上为机器翻译结果，长、整句建议使用 人工翻译 。
-
The report by a team from the United States and China appears in the Proceedings of the National Academy of Sciences.
VOA: special.2009.10.27
-
Stephen Powles wrote about it in the Proceedings of the National Academy of Sciences in the United States.
VOA: special.2010.04.27