例文
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- The reversal of images by a plane mirror is perceived differently depending on the circumstances.
- The focal length of a plane mirror is infinity; its optical power is zero.
- To avoid errors due to parallax, a plane mirror is mounted below the compass needle.
- The most familiar type of mirror is the plane mirror, which has a flat screen surface.
- For example, a periscope is simply two plane mirrors aligned to allow for viewing around obstructions.
