遊ゆう星せい歯は車ぐるま装そう置ち

noun

planetary gear system; epicyclic gear train

Technical term used in mechanical engineering. Refers to a gear system consisting of a central sun gear, planet gears, and an outer ring gear.

• この自じ動どう車しゃの変へん速そく機きには遊ゆう星せい歯は車ぐるま装そう置