“early transition metal”的概念、定义、翻译、参考文献-科学参考

单词	early transition metal
释义	early transition metal Encyclopedia 理学短周期释 early transition metal前过渡金属 d轨道电子数较少（一般不超过5个）的过渡金属。包括钛分族、钒分族、铬分族的化学元素，属周期系ⅣB～ⅥB族。 Chemistry ＞有机化学＞金属有机化学＞释义 early transition metal前[期]过渡金属
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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。