This is the 6487th most frequent Russian word.
atomic
The Russian word "атомный" (atomic) means "relating to an atom or atoms."
In this sentence, 'atomic' ('атомные' in Russian) pertains to structures at the atomic scale, often in chemistry or physics.
Он изучает атомные структуры для своей диссертации.
He studies atomic structures for his dissertation.
Here, 'atomic' ('атомные' in Russian) describes power plants that use atomic energy, referring to nuclear technology.
Атомные электростанции производят значительное количество энергии.
Atomic power plants produce a significant amount of energy.
Here, 'atomic' ('атомная' in Russian) describes the precision level which is comparable to characteristics of atoms.