“鱼龙类”的概念、定义、翻译、参考文献-科学参考

单词	鱼龙类
释义	鱼龙类 Encyclopedia 理学爬行纲（化石）释 ichthyosaurians鱼龙类一类外形似鱼的中生代海洋爬行动物。
随便看	positron positron-annihilation apparatus positron annihilation spectroscopy positron annihilation spectroscopy (PAS) positron annihilation technique positron-annihilation technique positron-electron annihilation positron emission positron emission mammography positron emission tomography positron-emission tomography positron emission tomography-computed tomography positron emission tomography/computed tomography positron emission tomography-computed tomography (PET/CT) positron emission tomography-computed tomography，PET/CT positron emission tomography/magnetic resonance imaging positron emission tomography-magnetic resonance imaging，PET/MRI positron emission tomography (PET) positron emission tomography, PET positron-emission tomography, PET positron emission tomography pharmaceutical positron gun positronium positronium chemistry positronium production

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。