That is possible because this part of the transistor is made of tantalum pentoxide, a material whose atoms are arranged in a lattice which contains holes large enough for copper atoms to squeeze through.
这是有可能实现的，因为这部分晶体管是由五氧化二钽制造的——这种材料可以将它自身的原子排布在晶格中，这些晶格包括一些足够大的孔，可以让铜原子挤过去。