So the design differences are really driven by the mechanism of heat removal in the reactor and how that reactor is operated.

所以，设计的不同是由,除去反应堆热量的原理的不同决定的,还有反应堆运作的方式决定的。

youdao

Then you have a decrease in heat removal which is where you're not able to remove as much heat from the secondary system, by the secondary system.

然后再热量除去也会减少，在那里，你们除去的热量不能够，和在次级系统中一样多，通过次级系统。

youdao

The most important of which are maintaining your critical safety functions which is reactivity control, core heat removal, secondary heat removal and containment integrity.

最重要的就是维持住，你们重要的安全功能，那就是反应力的控制，核心热量的消除，次级热量的消除，以及容器的完整性。

youdao

Because laser tattoo removal uses heat to destroy the dyes, there's no guarantee that it won't leave behind scarring, discoloration, or an outline of the previous design.

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Without an active removal of decay heat, the reactor was adding heat to the water faster than it was taking it out, and the temperature was rising.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi

Heat removal could continue indefinitely in this way.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi