受试者坐在标准测听室内，由专业技师检查气、骨导纯音听阈。
All the subjects sat in the standard audiometric room, the air and bone conducted pure-tone auditory thresholds were examined by the professional technician.
大前庭导水管综合征纯音听阈可以有低范围的气骨导差，但原因不明。
An air-bone gap might exist in ATPT of LVAS at low frequencies, while the underlying cause remains unclear.
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