单词	三态控制
释义	三态控制three-state control
随便看	audio visual communication audio-visual communication audiovisual communication audiovisual communications audio-visual education audiovisual education audio visual education association audiovisual equipment audio visual equipment directory audio-visual industries audiovisual information audio visual instruction audio-visual instruction audiovisual instruction audio-visual library audiovisually audio-visual materials audiovisual materials audiovisual media audiovisual media services directive audio visual media services without frontiers directive audio visual onlin audio visual onlin {=avline} audiovisuals audio visual satellite instruction