1. A surveying technique in which a region is divided into a series of triangular elements based on a line of known length so that accurate measurements of distances and directions may be made by the application of trigonometry. 
   三角测量法一种测量技术，通过将某一地区分成许多三角形，这些三角形是以一条已知长度的线为底，由此可通过使用平面直角三角形计算工具精确地测量距离和方向
2. geotechnical investigation and surveying 
   工程勘察
3. hydrographic surveying and charting 
   海洋测绘
4. military surveying and mapping 
   军事测绘
5. satellite surveying and mapping 
   卫星测地

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• 1. 三角测量
  triangular prism 三角柱...triangular surveying 三角测量...triangular 三角形的
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