Methods: The blue line of superior semicircular canal went through the mill and correlative structures were measured on 24 cases of wet cranial bone specimens(48 sides) .

方法：采用福尔马林固定的头颅标本24具（48侧），首先寻找弓状隆起并磨出上半规管蓝线，进一步测量其与内耳道及相关结构的位置关系。

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Methods: The blue line of superior semicircular canal went through the mill and correlative structures were measured on 24 cases of wet cranial bone specimens(48 sides) .

方法：采用福尔马林固定的头颅标本24具（48侧），首先寻找弓状隆起并磨出上半规管蓝线，进一步测量其与内耳道及相关结构的位置关系。

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