实体屏幕坐标
physical screen coordinates
多字体字符识别
m ulti-font character recognition
multifont character recognition
ECB液晶屏幕
electrically controlled birefringence LCD
LCD背投影屏幕
LCD rear projection screens
LCD点阵式屏幕显示
LCD dot matrix screen area
LED大屏幕显示
LED dot-matrix board display
LED大屏幕显示器
LED large screen display universal offline control card
LED large screen display universal offline control
LED大屏幕显示系统
LED large screen display system