Today we're gonna review the overall reactor types that are presently in existence.

今天我们要回顾一下现有的反应堆类型。

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Now this chart which is one of the final charts provides a summary of the major reactor types.

现在这个图标是最后的图标之一，它总结了主要的反应堆的类型。

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And we have, and I'll get to that in a moment, but there are many reactor types we can talk about.

我们有，我们会马上说到那点，但是有很多我们可以谈论的的反应堆类型。

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There are a number of different reactors in use, most commonly water-cooled pressurised or boiling water reactors - though other reactor types are kept cool with the help of liquid metal, gas or molten salt.

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