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gurgitation n.1.(液體的)漩渦,(波濤似的)沸騰;翻滾。2.沸騰...

gurgle

As one of frame data of national spatial data infrastructure , digital elevation model excels contour line . it can express continuous gurgitation of ground , and it can also carry out relevant mathematical analyses and imitation , so it is applied broadly in various fields at present =數字高程模型dem是國家空間數據基礎設施的框架數據之一,其彌補了等高線的不足,既能表示地面的連續起伏變化,又適合作相應的數學分析和模擬,現在已在各個領域得到了廣泛的應用。