“Columbia or Nuna”的概念、定义、翻译、参考文献-科学参考

单词	Columbia or Nuna
释义	Columbia or Nuna Encyclopedia 理学哥伦比亚超大陆释 Columbia or Nuna哥伦比亚超大陆存在于古元古代的18亿～15亿年前，由21亿～18亿年前全球规模碰撞造山作用拼合而成的超级大陆。又称努纳或Hudsonland超级大陆。
随便看	contragradience contragradient contragradient automorphism contragradient composition contragradient isomorphism contragradient linear transformation contragradient mapping contragradient matrix contragradient module contragradient representation contragradient set contragradient transformation contragredient contragredient automorphism contraharmonic mean contraindicated during pregnancy contraindicated in diet contraindication of Chinese medicinal use contraindication of pattern contralto contranatant contraorbital contraorbitally contra-parallelogram contrapedal curve

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。