Focal plane: The plane where light entering a lens forms a sharp image.

焦面：光线经过镜头后形成清晰影象的平面。

This shows the focal plane in the game view to assist learning and debugging.

在游戏中显示当前的聚焦平面，从而来帮助学习和调试。

The field of view can be limited by inserting a stop in the focal plane of microscope.

可以在显微镜的焦平面上加装一光阑，从而限制视区。

The device is by evaluating the image definition to automatically search the focal plane.

该装置借助对图像清晰度评价来自动搜索到正焦面。

It has an aluminized surface that reflects starlight to form an image at the focal plane.

表面镀铝膜，将星光反射到焦平面上成像。