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。
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。
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。
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