Actinide contraction
[化] 锕系收缩
🧩 词语组成解析
n. [化]锕类
contraction
[kən'trækʃən]
n. 收缩，缩减;[语]缩略，略体，缩写;（开支等）缩减;（分娩时）子宫收缩;
🗣️ 情景例句
A vice-presidency
副总裁
A friend is best found in adversity.
患难见真友。
You have a very successful business.
你的事业很成功。