单词:radiocarbon tracer
放射性碳示踪剂
单词:radiocarbon tracer 相关文章
Lake Sediment Could Better Date Ancient Finds Radiocarbon dating is the best-known and most widely used method to determine the age of organic material, such as bone or wood or plant matter. All such material contains radioactive carbon atoms, known
发表于:2019-01-14 / 阅读(70) / 评论(0)
VOA标准英语2012年(十月)