- national triangulation network
- 国家: country; state; nation
- 三角: triangle; trigonometry; trig ...
- 网: net
- 国家三角测量规范: specifications for national triangulation
- 三角网: gusset; net of triangulation; triangle mesh; triangular mesh; triangulation network
关注微信公众号：chachacidian，回复:国家三角网，即可在微信中查询翻译
