xiàng​xiàn​yí

quadrant

象限仪 象限儀 xiàng​xiàn​yí
quadrant
An instrument used for measuring altitudes and angles, consisting of a 90-degree graduated arc with a sighting mechanism (such as a telescope) and a plumb line for establishing vertical/horizontal orientation

Frequency

Written text
0.047 per million

Cross-References

Classifier

Sources

Frequency data
BCC Corpus (BLCU)