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  1. 中国工程物理研究院
    https://www.caep.ac.cn/doc/2020/01/06/1880.shtml

    制造原子弹的关键技术：反应堆生产钚-239 - caep

  2. 百度百科
    https://baike.baidu.com/item/钚

    钚（化学元素）_百度百科

  3. 百度百科
    https://baike.baidu.com/item/钚-239

    钚-239 - 百度百科

  4. 百度知道
    https://zhidao.baidu.com/question/2064475959556394867.html

    钚239的自发放射强度与其半衰期有怎样的关系？_百度知道

  5. 百度百科
    https://baike.baidu.com/item/镎239

    镎239 - 百度百科

  6. 维基百科
    https://zh.wikipedia.org/wiki/钚

    钚 - 维基百科，自由的百科全书

    1941年2月23日， 格倫·西奧多·西博格 、 埃德溫·麥克米倫 、 約瑟夫·肯尼迪 和 歐亞哲 （英语：Arthur Wahl） 博士在 柏克萊加州大學，在一個60英吋（150公分）的 迴旋加速器 中以 氘核 撞擊鈾、首度成功地以物理方法得到鈽元素 [9]。. …

  7. 其他用户还问了以下问题
    What cities are in the 239 area code?
    Other cities in the 239 area code include: North Fort Myers, Marco Island, Lehigh Acres, Sanibel, Fort Myers Beach, Ochopee, Bokeelia, and Winter Haven. Fort Myers is the county seat and commercial center of Lee County, Florida, United States.

    Where is Area Code 239? | Fort Myers, Naples, & Cape Coral, FL - Spokeo

    spokeo.com
    What is the significance of the number 239?
    Area code 239 is a telephone area code in the North American Numbering Plan (NANP) for a large part of Southwestern Florida. The numbering plan area includes Lee and Collier counties, small parts of Hendry and Charlotte counties and the Everglades National Park in Mainland Monroe County.

    Area code 239 - Wikipedia

    en.wikipedia.org
    What are the most notable things about the239 area code?
    Area code 239 is located in southern Florida and covers Cape Coral, Lehigh Acres, and Fort Myers. It is the only area code that serves the area. What time zone is area code 239? The 239 area code is located in the Eastern timezone. The Eastern time zone is also known as America/New_York.

    239 Area Code - Location map, time zone, and phone lookup

    allareacodes.com
    What is the 239 area code split from?
    The numbering plan area includes Lee and Collier counties, small parts of Hendry and Charlotte counties and the Everglades National Park in Mainland Monroe County. The area code was created on March 11, 2002, in an area code split in which the southern half of area code 941, from North Fort Myers, was renumbered with 239.

    Area code 239 - Wikipedia

    en.wikipedia.org
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  8. 百度文库
    https://wenku.baidu.com/view/336176b330d4b14e...

    钚239衰变方程 - 百度文库

  9. 中国核技术网
    https://www.ccnta.cn/article/7050.html

    放射性!钚元素简介 - 中国核技术网 - ccnta.cn

    2021年8月24日 · 今天，出于所有实际目的，有两种钚：反应堆级和武器级。. 钚是“胖子”背后的关键成分，这颗核弹于 1945 年摧毁了日本长崎，造成数万人死亡并有效地结束了第二次世界大战。. 三位一体爆炸发生在爆炸后 16 毫秒，这 …

  10. 维基百科
    https://zh.wikipedia.org/zh-my/钚

    钚 - 维基百科，自由的百科全书 - zh.wikipedia.org

  11. 知乎
    https://www.zhihu.com/question/449524337

    钚的核裂变的反应式有哪些? - 知乎