词汇	光学环
释义	光学环医optical circle
随便看	position pendule position phoria position position pickoff position pick-off position pilot lamp position pin position pin 0 position pin 1 Position Plate position play position playback accuracy position plotter position-plotting sheet position pointer position pose angle position-pose measurement position positioning error position posture position potency force position potential energy position power position precision Position precisioning position prediction position prediction information