carbon dating

英 美
  • n.碳定年
  • carbon n.碳;复写纸;复本;碳精棒
  • dating n.约会动词date的现在分词.
Noun:
  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

【邻近词汇】