非晶体金属焊接工艺新颖，焊接接头表面光滑、内外无焊瘤、抗晶间腐蚀性能良好。

The joints welded by newly developed non-crystal metal welding process have smooth surfaces, with excellent intercrystalline corrosion resistance and no internal and external welding beadings.

youdao

在其它参数保持不变的情况下，得出细晶粒多晶体金属的平均疲劳寿命随晶粒尺寸和应力振幅的增加而减小的结论。

The fatigue life is seen to depend on the grain size and stress amplitude, based on the nonequilibrium statistical theory of fatigue fracture and the model of interface energy.

youdao

金属是由原子整齐排列的晶体组成。

Metals are composed of crystals that have their atoms lined up in neat rows.

youdao

that's one way to think about it, and there's also another way, and this is the way that your book presents it. If you, in fact, have two of the same atom right next to each other, let's say you have a crystal, or let's say you're talking about a metal, what you can do is just look at the distance between the two nuclei, and split that in 1/2, and take the atomic radius that way.

这只是一种定义的思路，另外还有其它方法，也就是你们课本上的方法，如果你，事实上，有两个相同的原子彼此靠在一起，比如说你有一个晶体，或者说你讨论的是一个金属，你所要做的就是,看看这两个原子核之间的距离，然后将距离除以二，就得到了这个原子的半径。

麻省理工公开课 - 化学原理课程节选