epidiascope

• 一种光学投影设备，既能将透明物体（如幻灯片）也能将不透明物体（如书页）的图像投射到屏幕上。

A noun referring to an optical device that projects images of both transparent and opaque objects onto a screen.

1. Optical projectorC2formaltechnical

   An optical device that projects images of both transparent and opaque objects onto a screen, used for educational or presentation purposes.

   光学投影仪

   • The professor used an epidiascope to display a page from a rare book.
   • In the old classroom, an epidiascope was used to show diagrams to the students.
   • The museum's epidiascope projected the ancient manuscript clearly.