The high-pressure core melt accidents in PWR nuclear power plant which cover most of the severe accidents, have large potential risk.

压水堆核电厂的高压熔堆事故覆盖了大部分的严重事故序列，且具有很大的潜在威胁。

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The penetration length of the core melt in sandwich injection molding was investigated by changing the viscosities of melts and process parameters.

以揭示材料粘度以及工艺参数对夹芯注塑成型过程中芯层熔体穿透深度的影响规律。

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Passive autocatalystic hydrogen recombiner is a device for eliminating hydrogen in the containment of the nuclear power plant when severe accident or core melt accident occurs.

非能动氢气复合装置是核电站发生严重事故时用于消除安全壳内氢气的安全设备之一。

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In like manner, I believe that reactors should be designed such that an earthquake of any magnitude could not destroy the reactor or its containment shell, further that if the reactor core was to start to melt down, the melt down itself would shut the reactor down and, at the very worst, the reactor would entomb itself with no potential release of radiation into the environment.

FORBES: A Year After Fukushima Meltdown, Is Nuke Power Any Safer?

That thinking changed on March 28, 1979, when a small valve stuck open, cooling water escaped and the reactor core of TMI's Unit 2 began to melt.

CNN: Three Mile Island, 20 years later