This alloy is formed by the fusion of two types of metal.

这种是用两种熔而成的。

PAHs are made up of fused rings of carbon atoms-think of chicken wire.

多环芳烃是由碳原子的熔环组成的——想想铁丝网。

And that is precisely what Dr Dullmann intends to do in the case of element 119, by firing titanium atoms (number 22) at those of berkelium (97) and hoping some of them merge.

这也是Dullmann博士想对119元素应用的，将钛（22）原子与锫（97）原子大量熔，希望其中一些可以并产生新元素。

Then that builds up until the temperature hits about 2-3 billion degrees, whereupon silicon can fuse.

然后温度上升到20 - 30亿度，硅就可以熔。

This is because there's a layer of oxidation on metals that prevents them from welding together.

这是因为面有一层氧化膜，阻止它们熔。

Without that layer, metals would instantly bind to each other.

没有氧化膜，所有都会熔。

You've described this as a molten moment, a rare period in American history when the decline of one political order makes way for another.

你将其描述为一个熔时刻，美国历史上一个罕见的时期， 一个政治秩序的衰落为另一个政治秩序让路。

The process of making the mirror had involved  taking layers of glass and fusing them on top of each other.

制作镜面的过程中，采用了将多层玻璃逐层熔叠加的工艺。

If the actual temperatures deviate from these ranges, it can cause incomplete solder fusion, leading to weak joints.

如果实际温度偏离这些范围，可能会导致焊料熔不完全，从而导致接头脆弱。