backsight
/bak-sahyt/US // ˈbækˌsaɪt //UK // (ˈbækˌsaɪt) //
后视,后视镜,背视,背影
Definitions
n.名词 noun
- 1
Surveying.
- : a sight on a previously occupied instrument station.
- : the reading on a rod that is held on a point of known elevation, used in computing the elevation of the instrument.
Examples
The tiny figures seen over the slide of the backsight seemed a little larger, but also fewer at each successive volley.
"Come quick," he shouted, adjusting the backsight of a rifle.
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