查询词典 sealed radioactive source

A radioactive transuranic element; discovered by bombarding ''.

一种放射性超铀元素，在用α粒子轰击''。

A radioactive transuranic element synthesized by bombarding ''.

一种放射性超铀元素，用碳离子轰击''。

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

一种放射性的超铀金属元素，在用氦原子轰击铀时发现。

A radioactive transuranic element produced by bombarding plutonium with neutrons.

一种放射性超铀元素，用中子轰击钚时产生。

A radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei.

一种放射性超铀元素，在用氦核子轰击钚时发现。

A radioactive transuranic element synthesized by bombarding einsteinium with alpha particles.

一种放射性超铀元素，用α粒子轰击锿而合成。

A radioactive transuranic metallic element produced by bombarding plutonium with neutrons.

一种放射性超铀元素，用中子轰击钚时产生。

A short - lived , radioactive synthetic transuranic element produced from californium and having

铹一种寿命期短的、人工合成的放射性超铀元素，从锎中生成，有质量从255到260的同位素，半衰期从几秒钟到三分钟；原子序数

Radioactive fallout still pollutes Rongelap Atoll, about 100 miles (160 kilometers) to the east, but the nuclear blasts seem to have had no long-term impact on marine life there, including this school of trevally fish photographed by Kristof in the late '90s.

辐射尘污染仍朗格拉普环礁约100英里（ 160公里）至东，但核爆炸似乎都没有长远的影响，对海洋生物的存在，其中包括这所学校的trevally鱼拍照Kristof在90年代后期。

Tritium is one of the mildest radioactive isotopes.

氚是最和缓的放射性同位素之一。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。