有限保护语音设备
limited protection voice equipment
语音设备常见故障
audio equipments common malfunction
语音保密设备
speech security equipment
语音频段数据通信设备
VGDF VoiceGrade Data Facility
非母语语音识别
nonnative speech recognition
汉语语音变换
Chinese speech conversion
汉语语音检索
Chinese speech retrieval
Chinese spoken term detection
汉语语音清晰度
chinese intelligibility
Chinese speech intelligibility
汉语语音识别
mandarin speech recognition
Recognition of Chinese Speech
互联网英语语音聊天室
internet english voice chat room