All the land tortoise species formed a tight cluster of points in the upper part of the triangle; all the water turtles cluster in the lower part of the triangular graph.
所有陆龟品种都在三角形的上部形成一个紧密的点群；所有的水龟都聚集在三角图的下方。
2
And dry and wet regions were separated by use of cluster analysis based on the water variation for Heilongjiang province.
并根据水分供应曲线，用聚类分析法将黑龙江省分为不同类型的干湿区。
3
The results obtained by the cluster method show that there are eight modified water-masses in this arca.