亚洲AV成人精品一区二区三区四区|快播日韩美嘛豆一区|国产欧美激情a级免费|一级黄片AAA色一品|久久国产成人精品Av|谁有AV免费观看|成人高清国产视频|日韩区欧美区久久综合一区|在线观看黄色网页|亚洲欧美国产11

單詞乎

carbon dating

carbon dating是什么意思、carbon dating怎么讀

carbon dating漢語翻譯

【化】 碳(14)測定年代

carbon dating詞型變化

動(dòng)詞:carbon-date 

carbon dating英語解釋

名詞 carbon dating:

  1. a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years
    同義詞:radiocarbon dating, carbon-14 dating
0
糾錯(cuò)