查询词典 radioactive element

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

Periodic Table Ⅶ B family silver or gray-black powder bulk solid metal transition element, atomic number Z = 35, the original of the amount of 186,207, the chemical symbol FRe, there are two natural isotopes, stable 18575Re and radioactive 18775Re.

元素周期表中ⅦB族银白色的块状或灰黑色粉末状固体金属过渡元素，原子序数Z＝35，原了量186207，化学符号FRe，天然同位素有两种，稳定的18575Re和放射性的18775Re。

Activity exceeds 75 becquerels of parent radioactive chemical element per gram of substance.

成的任何物质，或包含该等元素的任何物质，而其放射性比，以每克物质计算，超逾75贝克耳的源放射性化学元素。

Activity exceeds 75 becquerels of parent radioactive chemical element per gram of substance.

或包含该等元素的任何物质，而其放射性比，以每克物质计算，超逾75贝克耳的源放射性化学元素。

Radioactive heat-producing element abundance in the crust of continental China estimated from terrestrial heat flow and the helium isotopic composition of underground fluids

根据实测岩石热导率和测温资料计算了柴达木盆地的大地热流值并编制了热流分布图，对 47个测点的热流值进行了统计。

Libby discovered radioactive carbon element dating method and solved the puzzle of earth and human history.

利比发现的放射性碳14定年法，解答了地球与人类历史上的疑惑。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。