Core damage states include no core damage, fuel clad failure, fuel overheat and fuel melt.

堆芯损伤状态包括堆芯无损伤、燃料元件包壳破损、燃料过热和燃料熔化等四种。

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The mechanical properties and failure patterns of the clad material are investigated with the method of experiment and theory.

采用理论与试验相结合的方法研究了这类材料的力学性能与主要失效方式。

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