一位发言人声称燃料棒的金属镀层可能已经溶毁，暴露出放射性核芯。

It was possible the rods' metal cladding had melted, exposing the radioactive core, a spokesman said.

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目的：通过胶原酶对椎间盘髓核的体外溶解实验，进一步验证胶原酶溶盘术的作用并确认胶原酶的用量。

AIM: To further validate the effect of collagenase chemonucleolysis and the amount of collagenase through in vitro experiment of collagenase dissolving nucleus gelatinosus.

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目的评价经皮颈椎间盘切除术(PCD)和化学溶核(CNL)治疗颈椎间盘突出症的价值。

Objective to evaluate percutaneous cervical diskectomy (PCD) and chemonucleolysis (CNL) in treating cervical disk herniation.

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