双频RFID是指利用两个频段同时工作的RFID技术，可兼容两个频段各自的优点。
Dual-frequency RFID refers to the RFID technology that uses two frequency bands to work at the same time, which can be compatible with the respective advantages of the two frequency bands.
应用范围Scope of application：
体育运动Sports：
田径中长跑、竞走、马拉松、铁人三项、接力赛、游泳、自行车、摩托车、越野滑雪、轮滑、卡丁车、考核及比赛等。
track and field middle and long distance running, walking race, marathon, triathlon, relay race, swimming, bicycle, motorcycle, cross-country skiing, roller skating, karting, examination and competition, etc.
教育领域Education field：
广泛运用在学校运动会、冬季长跑、体育测验、体校日常训练和测验，中高考计时等。
widely used in school sports meeting, winter long-distance running, sports test, daily training and test of sports school, timing of college entrance examination, etc.
