握住音叉，轻击掌根，将震动音叉面放在受检者头顶正中线或额头中间。
Hold fork at its base and tap lightly against heel of palm. Place base of vibrating fork on midline vertex of client's head or middle of forehead.
握住音叉，轻击掌根，将震动音叉面放在受检者头顶正中线或额头中间。
Hold fork at its base and tap lightly against heel of palm. Place base of vibrating fork on midline vertex of client's head or middle of forehead.
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