一些食品中还发现含有放射性铯。
铯- 137则破坏细胞，增加癌症风险。
Cesium-137 damages cells and leads to an increased risk of cancer.
此外还发现了放射性铯，但放射性浓度较低。
Radioactive cesium has also been detected, but at lower activity concentrations.
还发现了放射性铯。
铯- 137很容易与水混合，其化学性质很像钾。
Cesium-137 mixes easily with water and is chemically similar to potassium.
这一获得诺贝尔奖的发现产生了铯原子钟和氢微波激射器。
His discoveries, which won him the Nobel prize, led to the caesium atomic clock and the hydrogen maser.
意味着健康威胁的主要的放射性核素包括放射性铯和放射性碘。
The main radionuclides representing health risk are radioactive caesium and radioactive iodine.
放射性铯元素在福岛的花椰菜中被发现，大大超出国家限制范围。
Radioactive cesium was detected in broccoli in Fukushima Prefecture well above the country's limit.
在日本报道的放射性物质泄漏中，最令人担忧的主要是放射性碘和铯。
The big worries on the reported releases of radioactive material in Japan center on radioactive iodine and cesium.
铯137的放射可以打乱细胞运作，包括染色体，从而加大患癌风险。
The radiation from cesium-137 can throw cellular machinery out of order, including the chromosomes, leading to an increased risk of cancer.
长期以来，对人体健康的一大威胁就是铯137，它的半衰期为三十年。
Over the long term, the big threat to human health is cesium-137, which has a half-life of 30 years.
然后过热燃料棒释放出某些气态易挥发放射性元素，比如铯、碘、锶和碲。
Overheating fuel rods then discharge gaseous forms of certain volatile radioactive elements, including cesium, iodine, strontium and tellurium.
这就是众所周知的铯原子钟的基础，它是目前的频率和时间基准。
This is the basis for the well - known cesium clock, presently the standard of frequency and time.
研究人员用聚焦的铯离子束将水分子自包裹体中打出并用质谱仪测量其数量。
The researchers used a focused beam of caesium ions to dislodge molecules of water from the inclusions and measured the amount with a mass spectrometer.
其中一个样品中还检测到了放射性的铯-137，但是还在法律限定标准之下。
Radioactive caesium-137 also appeared in one of the samples, but at levels below the legal limit.
福岛市也已在饮用水中发现了碘、铯- 135和铯- 137等放射性物质。
Also in Fukushima City, radioactive elements, including iodine, cesium-135 and cesium-137, were found in drinking water.
对食品监测的结果显示，某些食品商品中放射性碘和铯的浓度超过了日本的监管上限。
The radioactive iodine and caesium in concentrations above the Japanese regulatory limits have been detected in some food commodities as a result of food monitoring
比如说，秒就是根据铯原子内部的电子跃迁时间来下的定义，而米的定义则和光速有关。
A second of time, for instance, is now defined in terms of an electron transition of the cesium atom. And the meter is tied to the speed of light.
这座城市面临的最大问题就是处理铯—137，这是一种半衰期为30年的放射性同位素。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
钚、铯以及锶本身就是有限资源，如果裂变反应堆技术先进到一定程度，它们又会成为燃料。
Plutonium, cesium and strontium are also limited resources, and if fissionreactor technology advances enough, they could become fuel sources themselves.
低剂量的铯137辐射，即使辐射时间很长，恐怕也不会造成我们所设想的那种对健康的破坏。
Low dose exposure to caesium-137, even over a long period of time, is perhaps not as damaging to health as we would have predicted.
核反应堆完全熔解后，会释放出另一种危险物质铯- 137。铯- 137的半衰期为30年。
Cesium-137, with a half-life of 30 years, is another dangerous substance emitted in a full-scale nuclear meltdown.
日本原子能安全和保安院说，爆炸后在核电站探测到的放射性铯，极有可能是来自于融毁的燃料棒。
Japan's nuclear agency said there was a strong possibility that radioactive cesium detected at the plant after the blast was from the melting of a fuel rod.
目前情况下值得忧虑的是电离辐射，它由重同位素——如碘131和铯137——自发衰变而生成。
Of concern in the current situation is ionizing radiation, which is produced by spontaneously decaying heavy isotopes, such as iodine 131 and cesium 137.
目前，第一道屏障——燃料包壳，已经明显失去功用，因为专家已经在核电站附近检测到了铯元素。
So far the first barrier, which is the fuel cladding, has apparently failed, because they are detecting cesium.
一团放射性铯137，整体以恒定的速率衰变，但是其内部单个原子的衰变是一种不可预测的随机模式。
A lump of radioactive cesium-137, for example, may decay at a steady rate overall, but individual atoms within the lump will decay in an unpredictable, random pattern.
福岛市官员也说，他们在饮水中发现了碘、铯- 135和铯- 137，约为不适于饮用水平的四分之一。
Officials at Fukushima City also said that they found iodine, cesium-135 and cesium-137 in drinking water, at about one-quarter the levels that would make the water unfit to drink.
福岛市官员也说，他们在饮水中发现了碘、铯- 135和铯- 137，约为不适于饮用水平的四分之一。
Officials at Fukushima City also said that they found iodine, cesium-135 and cesium-137 in drinking water, at about one-quarter the levels that would make the water unfit to drink.
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