反作用力 fǎn zuò yòng lì 🔊 reaction force + Keep this word Meanings fǎn zuò yòng lì (physics) reaction force Its characters 反fǎncontraryHSK 5作zuòto do; to engage in用yòngto use; to make use of; to employHSK 3力lìpowerHSK 5