单词：isotopic signature
单词：isotopic signature 相关文章
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths crust is old. Billions of years old. So old that its nearly impossible to imagine. And now scientists have discovered what may be the oldest
Scientific American(九)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar
Scientific American(一)月
今天我们要学的词是signature。 Signature, 大家都知道，是签名的意思；但是除此以外， signature还可以用来指标志性的，独具特色的。 Health care reform is President Obama's signature domestic policy, 医疗保健
英语每日一词
Scientists Closer to Solving Plain of Jars Mystery A new group of human remains has been uncovered on the Plain of Jars in Laos. They are believed to date back to the Iron Age, some 2,500 years ago. The Plain of Jars is in the central Lao province of
2016年VOA慢速英语(三)月
Would you ever take your love away? A question that I'm asking everyday Cause nothing in this life is ever free So baby can you tell me why it's me you love? Why you give so much Your touch is like ah signature You signed your name on my heart And it
节奏布鲁斯
Compston's machine allowed such rocks to be dated with unparalleled precision. 康普斯森的仪器能以无与伦比的精确度测定这些岩石的年代。 The prototype SHRIMP was built and machined in the Earth Science department's own worksho
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