什么是融毁，能够避免吗？
日本专家说，反应堆内的燃料棒完全与空气接触并融毁。
Japanese experts say the fuel rods inside the reactor were fully exposed to the air and melted.
不过，由于燃料棒看起来落到反应堆的底部，避免了完全融毁。
However, the fuel apparently dropped to the bottom of the containment vessel, preventing it from going into a full meltdown stage.
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