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

根据两种比例确定了沉积物年代。

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.

受损反应堆内熔化燃料残渣通过注入水进行冷却，这些水与一系列有毒放射性物质（即放射性）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.

为了推进电站退役和福岛重建，向近海排放过多去除设备处理水不能推迟。

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.

也许是因为福岛放射性成分对鸟类更危险。

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

放射性膀胱显像和VCUG过程相似，只不过需要静注放射性示踪剂。

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

米歇尔发了一种他不认识物质，他给它取名为（因为它寄居在细胞里）。

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

邓说，根据过去验，ALPS 能否有效去除氚、碳-14 和其他放射性还不确定。

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

报告还称，有过处理污水中仍含有其他放射性，需进一步净化处理。

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

这些粒子与岩石中矿物质发生反应，产生放射性，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种放射性降低到安全或不可检测水平，只会残留微量氚（一种放射性氢同位）和其他两种同位。

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 水平，发浓度几乎为零。

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

但该日期已被采用宇宙成因测年工作推翻。

A water treatment system removes radionuclides and reduces radioactivity.

一个水处理系统能够去除放射性并降低放射性水平。

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

尽管能量无穷无尽，但供应却是有限。

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

每次武器爆炸——这比你想象要频繁——它都会散播放射性。

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

放射性活动血管扫描结果提示射血分数为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， 存在一种特定问题， 称为钴-60，它是所有退役工作中祸根。

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.

所以在电站退役时，遇到辐射安全和屏蔽问题时，你总是会计算是钴-60。