speculum

US /ˈspek.jə.ləm/
UK /ˈspek.jə.ləm/
"speculum" picture
1.

窥器, 开腔器

an instrument for opening and widening a body orifice to permit inspection of its interior

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The doctor used a speculum to examine the patient's ear canal.
医生用窥器检查了患者的耳道。
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A vaginal speculum is commonly used in gynecological examinations.
阴道窥器常用于妇科检查。
:
dilatorexpanderretractor
2.

反射镜, 抛光金属板

a mirror or polished metal plate, especially one used in an optical instrument

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The telescope's primary speculum gathers light from distant stars.
望远镜的主反射镜收集来自遥远恒星的光线。
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Ancient astronomers used polished metal speculums in their early instruments.
古代天文学家在他们的早期仪器中使用了抛光的金属反射镜。
:
mirrorreflector