一般认为语言频率(0.5,1.2Hz)平均听阈在26dB以上,即有听力障碍,听力损失在70dB以内者称重听,在70dB以上者为聋,临床上习惯统称为聋(deafness)。各种... 详情>
温馨提示:经常按摩耳朵可促进内耳的血液循环
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