- 弧: arc bow
- 比曼视距弧: beaman arc; beaman stadia arc
- 毕门视距弧: beaman stadia arc=beaman arc
- 视距: apparent distance; apparent easement; distance of sight; eye release; horizon; line of sight (los); line-of-sight coverage; line-of-sight range; los ( line-of-sight ); los line of sight; range of visibility; sight distance; sighting distance; stadia distance; viewing distance; visibility range; visual range
- 视距,视距仪: stadia
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