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复数域为实数域上的可除结合代数,本文在其中定义了内积,并以这个新的代数系统为工具,研究了电、磁的聚焦场与偏转场重迭时的复合系统,导出了该系统的相对论三级几何象差公式。The complex number field is an associative division algebra over the real number field. In this paper we define an inner product in this field, and take this new algebraic system as a tool to study a general combined electric-magnetic focussing-deflection system with superimposed fields The relativistic third-order geometrical aberration formulas for this combined system have been derived.
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