燃料包壳是指封装燃料芯体的金属外壳。
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.
破损燃料组件定位检测系统是为了确保反应堆安全运行、及时处理燃料包壳破损事故的安全重要设备。
The failed fuel assembly identification system is an important safety system which ensures safe operations of reactor and immediate treatment of failed fuel rod cladding.
锆合金主要用作核反应堆燃料元件的包壳材料及其他堆内构件。
Zirconium-base alloys are used primarily as fuel cladding material and other core structure material in water cooled nuclear power reactors.
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