carrier phase differential surveying technique
radon surveying technique
aerial surveying and remote surveying
the land surveying and mapping office of JiangSu surveying and mapping bureau
The surveying company of Jiangsu oilfield geological surveying bureau
The Third Topographic Surveying Team of State Bureau of Surveying and Mapping
relaxation-precipitation controlling phase transformation technique(RPC technique)
separation-reaction-separation technique (= SRS technique)
(+)Electron-theodolite surveying syste
3、4 order leveling surveying
absolute gravity surveying
Academe of Tianjin City Surveying and Mapping
Academy of Geological Surveying and mapping of Fujian province
Academy of Surveying and Mapping of Hefei City
Accurate Level Surveying