meltdown

熔化；熔化的过程。

An act or process of melting.

核反应堆核心严重过热导致核心熔化和辐射泄漏

severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping

(常前接描述性词语)失控的混乱局面,常造成灾难性后果；(可数)此类局面；危机。

Chiefly preceded by a descriptive word: uncontrolled disorder which often has disastrous consequences; (countable) a situation involving this; a crisis.

可与核熔毁相提并论的灾难

a disaster comparable to a nuclear meltdown