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1. In physics, a quaternion is a vector that has four components.
在物理学中,一个四元数是一个具有四个分量的向量。
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2. The quaternion method is used to solve systems of equations with complex numbers.
四元数方法用于解决含有复数的方程系统。
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3. The quaternion group is a subgroup of the real number field.
四元数群是实数域的一个子群。