Medium High Frequency Direction Finder

• 中高频测向器

Medium High Frequency Direction Finder的用法和样例：

例句

1. Methods The group with noise exposure history and tinnitus which were normal examined by pure-tone audiometry and control group were examined by extended high frequency audiometry.
   方法应用扩展高频测听对常规纯音测听测试正常的耳鸣及噪音暴露者和正常对照组进行检测。