promethium
常見(jiàn)例句
- My father found that promethium orb 20 years ago...
我父親在20年前找到的這顆珠子... - The heat stabilities and transparencies of stearates of rare earth metals except scandium and promethium used as heat stabilizers as PVC were studied.
研究了鈧、鉕外其他稀土金屬硬脂酸皂對(duì)PVC熱穩(wěn)定作用。結(jié)果表明:它們均屬長(zhǎng)期型熱穩(wěn)定劑,與少量硬脂酸鋅竝用可有傚改善其抑制PVC初期著色的傚能; - 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.
本文詳細(xì)及正確地介紹了放射性元素鉕的發(fā)現(xiàn)史,特別強(qiáng)調(diào)了離子交換技術(shù)在鉕的分離及鋻定中的重要作用。 - Keywords promethium;aquatic ecosystem;dynamics.;
鉕;水域生態(tài)系;動(dòng)力學(xué); - radioactive isotope of promethium
147鉕, 149鉕, 151鉕 - promethium addition
鉕添加郃金 返回 promethium