📁 真空
Includes sites on the specific properties of an environment where all of the matter has been evacuated (i.e. there would be nothing), as well as techniques and equipment for the attainment of such conditions in scientific investigations.
Includes sites on the specific properties of an environment where all of the matter has been evacuated (i.e. there would be nothing), as well as techniques and equipment for the attainment of such conditions in scientific investigations.