This is the first cardinal point the practitioner should keep in mind.
这是第一个基本点的医生应该牢记。
In this paper, the calculating formulas are put forward from the definition of cardinal point.
从基点的定义给出厚透镜基点的计算公式。
In this paper, the calculating formulas are put forward from the definition of cardinal point.
从基点的定义给出厚透镜基点的计算公式。
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