Dragon Ball has always been about escalation, especially in matters concerning power. Nearly every time a new enemy appears, one can expect them to be stronger than everyone who came before them. A similar line of thinking can be applied to science. New inventions and innovations often build off of what came before. The more a scientist understands the universe, the more it helps to create new things. With those concepts in mind, it would make sense for new inventions in the Dragon Ball universe, like the Androids, to become continually more powerful and efficient.
Source：https://www.cbr.com/dbs-theory-gammas-dont-have-infinite-energy/
