“氦”的概念、定义、翻译、参考文献-科学参考

单词	氦
释义	氦 Encyclopedia 理学氦释 helium氦化学元素，元素符号He，原子序数2，原子量4.002602(2)，属周期系零族元素，稀有气体。 Astronomy 全称：helium。缩写：He氦 Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 helium氦
随便看	precategory precaution precautionary approach precautionary demand for money precautionary principle precautionary principle of biosafety assessment precautionary principle of EMF precaval vein precedance relation in dependency tree precedence precedence function precedence grammar precedence method precedence relation precedent anthologies precedent as reference in a trial preceding preceding limb preceding spot preceding sunspot Preceramic Period preceramic polymer precess precessing-disk model precession

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。