名词
中文翻译：聚焦点直径
同义词：
['focus point diameter', 'focus spot diameter例句：1. The camera lens is designed to focus on the subject at a specific spot.（相机镜头设计成在特定点聚焦于主题。）']
例句：
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1. The camera lens is designed to focus on the subject at a specific spot.
相机镜头设计成在特定点聚焦于主题。
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2.The scientist focused his attention on the experiment.
科学家把注意力集中在实验上。
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3. The engineer measured the focus spot diameter of the microscope.
工程师测量了显微镜的聚焦点直径。