But despite all that, the reactor vessels have held, and radioactive release is limited.
但是尽管发生了这一切不幸，反应堆外壳并没有破裂，放射性物质的泄漏也非常有限。
In the U. S., reactors shut down for refueling typically retain most of their fuel in the thick steel reactor pressure vessel that provides much more protection against a radioactive release.
在美国，如果反应堆因补充燃料而关闭，一般来说，在厚重的钢质反应堆压力容器内仍会存有大多数燃料，因为这个容器可提供更多保护，防止辐射泄漏。
Its purpose is not to shield radioactive emissions but to prevent the release of radioactive dust and other materials, and to keep out rainwater, which could carry contaminants into the water table.
它的作用不是用来遮挡放射性排放而是阻止放射性烟尘和其它物质的释放，以及遮挡雨水以防止雨水携带污染物流入地下水。
As the rods heat up, their zirconium cladding can rupture, which releases gaseous radioactive iodine inside, and may even cause the uranium to melt and release much more radioactive material.
当燃料棒温度上升时，它们表面的锆会破裂开来，在内部释放出气态的放射性碘，也许甚至会导致铀熔化并释放出更多的放射性物质。
Some groups oppose nuclear power stations because they produce radioactive waste and could release radioactive material if there was an accident.
一些组织反对核电站，因为它们会产生放射性废料，而如果发生事故可能会释放出放射性物质。
Apart from the damage caused by fires and explosions, accidents also release radioactive materials which can cause radiation sickness.
除了事故之中的爆炸和大火造成的伤害之外，核事故同样会释放出能够造成辐射病的放射性物质。
If the fuel rods became damaged they would release radioactive material into the remaining coolant.
如果燃料棒损坏，放射性物质会进到剩余的冷却剂中。
The Zircaloy casing is the second barrier to release that separates the radioactive fuel from the rest of the reactor.
锆锡合金形成第二道防护，把放射燃料跟反应堆其他的组成分隔开。
There were fears that an explosion at reactor unit 2 May have damaged the containment vessel, which increases the risk of release of hazardous radioactive materials.
有人担心2号反应堆发生的爆炸可能已经损坏了保护罩，从而增加了核泄漏的风险。
The pressure vessel is the third barrier to radioactive material release.
高压管是放射材料的第三道防护。
Containment is usually defined as that system whose functional responsibility is to prevent the release of radioactive fission products to the atmosphere.
安全壳的主要功能就是为了防止放射性裂变产物释放到大气中去。
Such an increase can be of a meteorological origin and need not be due to an accidental release of radioactive materials from the nuclear power stations.
但环境辐射水平增加并不一定是由于核电站意外泄漏放射性物质，亦有可能与气象因素有关。
Meanwhile, multiple physical barriers shall be set up to ensure that multiple lines of defense are in place to prevent and control release of radioactive substances into the environment.
同时，设置多道实体屏障，确保层层设防，防止和控制放射性物质释入环境。
The calculations of the release of airborne radioactive effluence to environment are bases of environmental impact assessment.
正常运行工况下气载放射性流出物向环境释放量的计算是环境影响评价的基础。
Nuclear power plants, unlike those that run on fossil fuels, release few greenhouse gases. But they produce waste that can be dangerously radioactive for thousands of years.
核电站不像那些使用化石燃料的电厂，它几乎不会释放温室气体，但是他们会产生废弃物，这些废弃物会在数千年内具有危险的放射性。
Objective: To evaluate the effect of combined Cisplatin Sustained Release for Implant with radioactive iodine-125(125I) to non-small cell lung cancer(NSCLC) guided by CT.
目的：探讨CT引导下经皮穿刺种植植入用缓释顺铂粒子联合放射性125I粒子治疗晚期非小细胞肺癌（NSCLC）的短期疗效。
This exposure could come from the release of radioactive material from the plant into the environment, usually characterized by a plume (cloud-like) formation.
站中核物质泄漏到外界环境中就会引起核辐射，通常呈向上的云状。
This exposure could come from the release of radioactive material from the plant into the environment, usually characterized by a plume (cloud-like) formation.
站中核物质泄漏到外界环境中就会引起核辐射，通常呈向上的云状。
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