查询词典 radioactive element

Radioisotope means the nuclide in a certain element with radioactive decay, which has the same ordinal number of atoms but different mass.

放射性同位素，是指某种发生放射性衰变的元素中具有相同原子序数但质量不同的核素。

In July 1898, Madame Curie and her husband got a great success that they discovered the radioactive element, polonium.

1898年7月，居里夫人和她的丈夫获得了很大的成功—他们发现了放射性元素钋。

In July 1898, Madame Curie and her husband got a great success that they discovered the radioactive element, polonium, which Marie named after Poland.

1898年7月，居里夫人和她的丈夫取得了一项极大的成就-----他们发现了一种放射性元素，玛丽以波兰这一名称的字头命名它为钋。

The immediate product of the radioactive decay of an element.

一种碱金属属的放射性元素，是锕瓦解的产物。

Each element has at least one isotope with unstable nuclei that can undergo radioactive decay .

每个元素至少有一个同位素不稳定原子核可以进行放射性衰变。

For instance, a compound can be synthesized with one of the atoms replaced by a radioactive isotope of the element.

例如，用某种放射性元素来代替原来的元素合成某一化合物，则放射性就可追踪这一化合物的合成过程。

And sure enough, only a few months later the decay of the atom nucleus in the radioactive element cobalt 60 revealed that it did not follow the principles of mirror symmetry.

几个月以后，利用放射性元素Co60的核衰变所做的实验表明镜像对称性不成立。

A radioactive element of the actinide series; found in uranium ores.

锕类的放射性元素，见于铀矿中。

Academic achievement:(1) early study of the electromagnetic wave transmitting and receiving;(2) found that there is penetration of uranium weak penetration of the α and β two kinds of radiation;(3) and Soddy worked together to propose release of radioactive atoms can be α or β atom into another element.

学术成就：（1）早年研究电磁波的发射和接收；（2）发现铀中有穿透力弱的α和穿透力强的β两种辐射；（3）和索迪合作提出放射性原子可以通过放出α或β变成另一种元素的原子。

Finally, the real prototypeof multi-channel intelligence isotope thickness gauge is introduced, using 241Am as a radioactive element.

最后，给出了以241Am低能γ射线源作为工作源所实现的多通道智能化同位素测厚仪的特性和应用范围。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。