气动开关 qìdòngkāiguān pneumatic switch; Jet-Tron Definitions Defs Origin Strokes Stroke Words Sentences Sents 气动 氣動 qìdòng pneumatic Driven or operated by compressed air; used to describe tools or machinery that use air as a power source.开关 開關 kāiguān noun switch power switch; mechanical device used to turn electricity, gas, or water on and off