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to phrases
acoustic test
avia. 声学测试
met. 声学试验; 锤敲声响检验
otorhinol. 听力试验; 测听
space 声试验
tech. 敲击试验; 音响试验
acoustic test: 30 phrases in 6 subjects
Aviation5
Metallurgy3
Nursing1
Otorhinolaryngology4
Space12
Technology5