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

根据两种核素比例确定了沉积年代。

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。

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。

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

这些粒子与岩石中矿质发生反应，产生放射性核素，这是一种原子。

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

告还称，现有经过处理污水中仍含有其他放射性核素，需进一步净化处理。

This is possible because the two nuclides break down at different rates, through the process of radioactive decay.

这是可，因为这两种核素在放射性衰变过程中以不同速率分解。

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

米歇尔发现了一种他不认质，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，根据过去经验，ALPS 否有效去除氚、碳-14 和其他放射性核素还不确定。

A water treatment system removes radionuclides and reduces radioactivity.

水处理系统去除放射性核素并降低放射性。

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工作推翻。

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，这些核素衰变率表明，岩石在全新世时代并没有暴露出来。

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

放射性核素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。

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

放射性核素膀胱显像和VCUG过程相似，只不过需要静注放射性示踪剂。

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

每次核武器爆炸——这种情况比你想象更频繁——它会传播放射性核素。

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核素成分对鸟类更危险。

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.

为了推进核电站退役和福岛重建，向近海排放经过多核素去除设备处理水不推迟。

A sophisticated dating technique, called cosmogenic nuclide dating, has upended previous estimates—and, with that, is rewriting an important chapter in the story of human evolution.

一种称为宇宙成因核素测年复杂测年技术推翻了之前估计，并由此改写了人类进化史重要篇章。

To test that idea, they directly dated the cave breccias in Members 2 and 4 using cosmogenic nuclide dating, which Dr Granger helped develop.

为了验证这个想法，他们使用格兰杰博士帮助开发宇宙成因核素测年法，直接对成员 2 和成员 4 中洞穴角砾岩进行了测年。

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.

受损反应堆内熔化核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质（即放射性核素）接触。

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种放射性核素降低到安全或不可检测水平，只会残留微量氚（一种放射性氢同位素）和其他两种同位素。