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- promethium isotope 钷同位素
- A radioactive isotope of carbon, especially carbon 14. 放射性碳碳的一种放射性同位素，尤指碳14。
- My father found that promethium orb 20 years ago... |我父亲在20年前找到的这颗珠子...
- The symbol for the isotope deuterium. 氘的化学符号同位素氘的符号
- Its most common form, or isotope, has 146 neutrons. 它最常见的形式或者同位素有146个中子。
- IS ~(40)Ca_(20) A STABLE ISOTOPE? ~(40)Ca_(20)是否稳定?
- Simmons: Get me a sample and some isotope readings. 弄些样本和同位素读数。
- Isotope shifts and hyperfine structure spectrum[J]. 引用该论文 马洪良.
- Changes of nuclear mass and nuclear size cause isotope shifts. 原子核质量和大小的不同引起同位素移动。
- The isotope ratio is directly used for comparing oils or gases. 同位素比率直接用于比较各种石油或天然气。
- An hour later the next lighter stable isotope, xenon 134, appeared. 一小时之后，略轻一点的稳定同位素氙134出现。
- This indium isotope was created at the same time as the earth. 这种铟同位素与地球产生在同一时代。
- The most abundant isotope of hydrogen,H1,with atomic mass1. 氘氢的数量最丰富的一种同位素，H1，原子质量为1。
- The atmospheric helium isotope ratio: Is it changing? 大气氦同位素比率在变化吗?
- Calculation of oxygen isotope model temperature in minerals. 矿物氧同位素模式温度计算。
- A radioactive isotope of thorium with mass number228. 射钍钍的放射性同位，质量数为
- The most abundant isotope of hydrogen, H1, with atomic mass1. 氘氢的数量最丰富的一种同位素，H1，原子质量为1
- This creates regions with geographically similar isotope values. 这将形成地理上同位素构成类似的区域。
- The isotope does occur in nature but only extremely rarely. 钋的同位素在自然界中的确存在，但是相当罕见。
- 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;
