promethium

My father found that promethium orb 20 years ago...

|我父亲在20年前找到的这颗珠子...

The heat stabilities and transparencies of stearates of rare earth metals except scandium and promethium used as heat stabilizers as PVC were studied.

研究了钪、钷外其他稀土金属硬脂酸皂对PVC热稳定作用。结果表明:它们均属长期型热稳定剂,与少量硬脂酸锌并用可有效改善其抑制PVC初期着色的效能;

The discovery of prometheum is presented in detail and emphasis is put on the important role of the ion exchange method in separating and identifying promethium.

本文详细及正确地介绍了放射性元素钷的发现史,特别强调了离子交换技术在钷的分离及鉴定中的重要作用。

Keywords promethium;aquatic ecosystem;dynamics.;

钷;水域生态系;动力学;

radioactive isotope of promethium

147钷, 149钷, 151钷

promethium 147 fueled pacemaker

147钷原子能起搏器

promethium addition

钷添加合金

promethium

n. [化]钷（稀土金属元素, 符号 Pm, 原子序61）

promethium [Pm]

钜

Promethium alloy

普罗米修含铝锌黄铜合金

promethium cell

钷电池

promethium oxide

氧化钷

promethium isotope

钷同位素

promethium 147 fueled cell

147钷燃料电池

promethium complex

钷络合物

promethium ion

钷离子

promethium compound

钷化合物