气体反应堆要求充实，以此能，达到20%，所以，我们需要制造出在芯块中的铀，那是锆管道的金属外壳，那被放置入一个反应堆核心里去。

Gas reactors require enrichments in the order of up to 20%. So we need to fabricate the uranium into pellets which are clad in zirconium tubes which are placed into the reactor core.

youdao

主要的问题在于这些盐中又多少还溶于水中，又有多少现在在铀燃料棒表面形成了一层外壳。

The big question is how much of that salt is still mixed with water and how much now forms a crust on the uranium fuel rods.

youdao