1) Douglas metric
Douglas度量
1.
Then We find the conditions are found that F is Berwald metric,Douglas metric and Projectively Flat.
找到了其成为Berwald度量、Douglas度量、射影平坦的条件。
2) Generalized Douglas-Weyl metric
推广的Douglas-Weyl度量
1.
Finally, we study Generalized Douglas-Weyl metric and give the sufficient and necessary conditions that a Finsler is generalized Douglas-Weyl metric.
最后,我们考虑了推广的Douglas-Weyl度量,给出了具有标量旗曲率的芬斯勒度量为推广的Douglas-Weyl度量的判定定理。
2.
We study a very important geometric quantity,Generalized Douglas-Weyl curvature and obtain a sufficient and neccessary condition for a Finsler metric on an n-dimension manifold(n≥3)to be a generalized Douglas-Weyl metric with weakly isotropic flag curvature.
研究Finsler度量中一类非常重要的几何量——推广的Douglas-Weyl度量。
3) Douglas colorimetric method
Douglas比色法
1.
(State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640) The fcasibility of determining the pentosan in pre-extraction liquor from eucalyptus chips by using Douglas colorimetric method was discussed in this paper.
探讨了Douglas比色法用于测定桉木半纤维素预提取液中戊聚糖的可行性,通过对木糖、葡萄糖、甘露糖、半乳糖和木素在相同条件下显色反应后的谱图进行比较,证明利用553 nm处的最大吸收进行测定可以排除己糖和木素的干扰。
4) Douglas-Peucker algorithm
Douglas-Peucker算法
1.
Improvement on Douglas-Peucker algorithm for non-topology vector data
Douglas-Peucker算法在无拓扑矢量数据压缩中的改进
2.
According to genetic algorithm theory,Douglas-Peucker algorithm and vector data characteristics,this paper proposes a model and method of vector data compression based on GA,encodes for the node of curve,and compresses the node t.
根据遗传算法理论、Douglas-Peucker算法和矢量数据的特点,提出了基于GA的矢量数据压缩的模型和方法。
6) the similar Douglas conversion
似Douglas变换
1.
This paper builds the spatial relationship of contour using contour tree, forms the similar Douglas conversion model by means of convex-hull and Douglas arithmetic, and then puts forward a new method of automatically identifying the ridge line and the valley floor line.
通过等高线树构建出各条等高线的空间关系,采用计算几何中的凸壳和Douglas算法,建立了似Douglas变换模型,提出了一种自动识别山脊线和谷底线的新方法。
补充资料：可公度量和不可公度量
可公度量和不可公度量
ommensulble and incommensuable magnitudes (quantities)
可公度t和不可公度t【~e璐u由lea目in~men-su.ble magultodes(quanti柱es);“洲口Mel娜M毗“”“”-113Mep目M曰e肠eJ皿，一皿曰』 如果两个同类量(例如两个长度或两个面积)具有或不具有公度(common measure，即另一个同类量，所考虑的两个量都是这个量的整数倍)，则相应地称这两个量为可公度量或不可公度量.正方形的边长和对角线，或圆的面积和丫的半径的平方，都是不可公度量的例尹.如果两个量是可公度的，则‘l艺们的比是有理数;相反，不可公度量忿比是无理数、
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条