The two groups were comparable in the air conduction (AC) and air bone gap (ABG) values , and had no difference statistically.
二组的年龄、术前气导（AC）和术前气骨导差（ABG）相似，统计分析差异无显著意义。
An air-bone gap might exist in ATPT of LVAS at low frequencies, while the underlying cause remains unclear.
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.
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。
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