反轴是旋转-倒反（又称旋转-反演）对称动作（或称为对称操作）对应的对称元素，与倒转轴同义。
本模型将铁磁薄层抽象为一个单晶，具有立方磁晶各向异性和单轴磁晶各向异性，而反铁磁层视为厚度趋近于半无穷，且只有单轴磁晶各向异性。
The thin FM film is taken to be a single crystal with cubic and uniaxial magnetocrystalline anisotropies, while the AFM film has only single uniaxial magnetocrystalline anisotropy.
本模型中铁磁层具有单轴磁晶各向异性和立方磁晶各向异性，而反铁磁层仅具有单轴磁晶各向异性，但其厚度趋于半无穷。
The thin FM film is considered as a single crystal with cubic and uniaxial magnetocrystalline anisotropies, while the AFM film has only uniaxial magnetocrystalline anisotropy.
目的明确额部常见皮瓣间供血血管系统之间的吻合情况，为额部皮瓣特别是眶上动脉蒂反流轴型皮瓣的临床应用提供解剖学基础。
Objective To study the anatomy of the blood vessel of the frontal skin flap, especially the anastomosis among them to provide basis for clinical use.
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