Our hypothesis is that about 1 or 2 percent of the population fails to develop a normal thickness of bone overlying the superior canal.
我们的假设是大概1% ~ 2%的人头部无法形成覆盖上半规管的正常厚度骨头。
If you have a normal thickness of bone, which is about 0.6 or 0.7 millimeter covering the superior canal, that's very unlikely to ever erode.
如果你有正常厚度——大概0.6 ~ 0.7毫米——的骨头覆盖上半规管，那就很难发生病变了。
The control group: 30 normal subjects who have normal thickness of interventricular septum and left ventricular posterior wall were randomly selected.
对照组：随机选择30例正常人，室间隔和左室后壁厚度正常。
The control group: 30 normal subjects who have normal thickness of interventricular septum and left ventricular posterior wall were randomly selected.
对照组：随机选择30例正常人，室间隔和左室后壁厚度正常。
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