英语词汇superchron怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	superchron
释义	superchron 简明释义 n.超级地磁年代：指地球磁场长时间保持稳定的地质时期。网络释义短语 1 polarity superchron 地物极性超代 ; 极性超时 2 Cretaceous Normal Superchron 到白垩纪正极性超时 3 Permian-Triassic mixed polarity superchron 二迭–三迭混合极性超期双语例句 1 It is generally acknowledged that geomagnetic polarity has reversed many times in geological history and an abnormal geologic phenomenon is the Cretaceous normal superchron(CNS). 地球磁场多次发生南北（正负）磁极位置的变换和白垩纪超静磁带（CNS）的异常现象，这已为大家所公认。词源 1 superchron: super + chron FROM: wiktionary
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