Principal Triangulation of Great Britain
The Principal Triangulation of Britain was a triangulation project carried out between 1784 and about 1853 at the instigation of senior surveyor General William Roy (1726–1790).
Trigonometrical Survey
英语百科
- airmechanics的意思
- air mechanics的意思
- Air Medal的意思
- Air Medal的意思
- airmedical officer的意思
- air medical quarantine station的意思
- air medicine的意思
- air medium的意思
- air melted的意思
- air melting的意思
- Airmen的意思
- airmen advisory的意思
- airmen convalescent depot的意思
- AIRMET的意思
- air metal battery的意思
- air meteorological observation satellite的意思
- airmeter的意思
- air meter的意思
- air metre的意思
- airmetre的意思
- AIRMETs的意思
- Airmic的意思
- air microbe monitor的意思
- Air Microbiology的意思
- air microfilter的意思