promethium

基本解釋

• n.[化]鉕（稀土金屬元素；符號(hào) Pm；原子序61）

同根派生

• promethium相關(guān)詞

英漢例句

• 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);

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