The sediment was dated based on the ratio of two nuclides.

根据两种核素的比例确定了沉积物的年代。

He explained that if the rock can " see the sky" it collects these nuclides.

他解释说，如果岩石 “看到天空”，这些核素就会被收集。

Melted nuclear fuel debris inside the damaged reactors is being cooled by pumped-in water, which comes into contact with a toxic cocktail of radioactive substances known as radionuclides.

受损反应堆内的熔化核燃料残渣通过注入的水进行冷却，这些水与一系列有毒的物质（即核素）接触。

The offshore discharge of ALPS-treated water is an issue that cannot be postponed in order to advance the decommissioning of the plant and the reconstruction of Fukushima.

为了推进核电站的退役和福岛的重建，向近海排经过多核素去除设备处理的水不能推迟。

It is possible that the composition of the radionuclides are proving more dangerous to the Fukushima birds than they are to the birds near Chernobyl.

也许是因为福岛的核素成分对鸟类更危险。

A radionuclide cystogram uses a similar procedure as the VCUG, except that it uses a radioactive tracer injected into a blood vessel.

核素膀胱显像和VCUG的过程相似，只不过需要静注示踪剂。

Miescher found a substance he didn't recognize and called it nuclein (because it resided in the nuclei of cells).

发现了一种他不认识的物质，他给它取名为核素（因为它寄居在细胞核里）。

It's uncertain whether the ALPS can remove tritium, carbon-14 and other radionuclides effectively based on past experience, Deng said.

邓说，根据过去的经验，ALPS 能否有效去除氚、碳-14 和其他核素还不确定。

It adds that the existing treated wastewater still contains other radionuclides and needs to be further purified.

报告还称，现有经过处理的污水中仍含有其他核素，需进一步净化处理。

These particles react with minerals in rocks to produce radioactive nuclides, a class of atoms.

这些粒子与岩石中的矿物质发生反应，产生核素，这是一种原子。

Tepco said for years that its purification system would reduce 62 radionuclides to safe or non-detectable levels and that only traces of tritium, a radioactive form of hydrogen, and two other isotopes would remain.

多年来，Tepco声称其净化系统将把62种核素降低到安全或不可检测的水平，只会残留微量的氚（一种氢同位素）和其他两种同位素。

He added that the decay rate of these nuclides shows that the rock had not been exposed during the Holocene Era.

他补充说，这些核素的衰变率表明，岩石在全新世时代并没有暴露出来。

They measured beryllium-10 and carbon-14 nuclide levels and found that concentrations were nearly zero.

他们测量了铍-10 和碳-14 核素水平，发现浓度几乎为零。

But that date has been overthrown by work employing cosmogenic nuclide dating.

但该日期已被采用宇宙成因核素测年的工作推翻。

A water treatment system removes radionuclides and reduces radioactivity.

一个水处理系统能够去除核素并降低水平。

But though the energy is inexhaustible, the supply of nuclei isn't.

尽管能量无穷无尽，但核素的供应却是有限的。

Every time a nuclear weapon goes off - which happens more often than you think - it spreads radionuclides.

每次核武器爆炸——这比你想象的要频繁——它都会散播核素。

Her MUGA had an ejection fraction of 19% with no focal wall motion abnormalities.

核素活动血管扫描结果提示血分数为19％无局部心室壁运动异常。

So there's this particular problem nuclide called cobalt 60, which is the kind of bane of all decommissioning.

因此， 存在一种特定的问题核素， 称为钴-60，它是所有退役工作中的祸根。

So generally when you have radiation safety and shielding problems when you're decommissioning a reactor, the nuclide that always comes up, the one you're doing all your calculations for, is this cobalt-60.

所以在核电站退役时，遇到辐安全和屏蔽问题时，你总是会计算的核素是钴-60。