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

例如，用某種放射性元素來代替原來的元素合成某一化合物www被啪啪舒服了，則放射性就可追蹤這一化合物的合成過程摸女生下体高潮喷水视频。

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.

學術成就：（1）早年研究電磁波的發(fā)射和接收；（2）發(fā)現(xiàn)鈾中有穿透力弱的α和穿透力強的β兩種輻射岛国、COM；（3）和索迪合作提出放射性原子可以通過放出α或β變成另一種元素的原子内地50岁熟妇网站。

A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.

一種軟質(zhì)、銀白色亚洲少妇无码视频、放射性四價金屬元素黄色福利视频网站，同位素用作核反應能源，見于釷礦和獨居石沙中日本亚洲视频。

In the process of mining, milling and steel and rare earth melting, thoron element was released to the accessible environment together with smoke, wastewater and disposed slag, leading to radioactive contamination to the environment.

在采礦国产真人无码AV一级一级、選礦、鋼鐵和稀土冶煉等生產(chǎn)中特级a级黄色网站，釷元素隨煙塵A片网站视频在线观看、廢水和廢渣排放至環(huán)境中，造成放射性污染欧美一级黄色片不卡直看。

A radioactive transuranic element which has been ''.

一種合成的放射性超鈾元素无遮挡aa一级毛片孕妇。

A radioactive transuranic element which has been synthesized.

一種合成的放射性超鈾元素。

A radioactive transuranic element; discovered by bombarding ''.

一種放射性超鈾元素性欧美一区二区，在用α粒子轟擊''性小说视频。

A radioactive transuranic element synthesized by bombarding ''.

一種放射性超鈾元素，用碳離子轟擊''a片黄色视频a片。

A radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms.

一種放射性的超鈾金屬元素日韩a级毛片AV一区免费在线观看，在用氦原子轟擊鈾時發(fā)現(xiàn)。

A radioactive transuranic element produced by bombarding plutonium with neutrons.

一種放射性超鈾元素欧美性爱一二三区，用中子轟擊钚時產(chǎn)生十大免费黄的色网站。