遞歸可數集 的英文怎麼說
中文拼音 [dìguīkěshǔjí]
遞歸可數集
英文
recursively countable set-
Based on the pilot studies on the evaluation index system and the method of sustainable development on loess plateau, this paper has designed the structure frame of the index system including three types of index including one advanced comprehensive index - the comprehensive index of sustainable development, five basic indexes and thirty element indexes, the analytic hierarchy process which can be used to calculate the sustainable development index weight supported by entropy technology. the model can be used to evaluate the sustainable development of loess plateau comprehensively integrated by mathematical method such as compositive appraisement method of hierarchy multilayer 、 main component analytical method 、 regression analytical method and so on. pilot study on the index system has been carried out on the leoss plateau of the northern shaanxi, and the results is promising
通過對黃土高原可持續發展評價指標體系和方法的初步研究,設計出了包括1個高級綜合指標- -可持續發展綜合指數、人口狀況等5個基本指標和人口自然增長率等30個元素指標的層次性指標體系結構框架,熵技術支持下確定可持續發展指標權重的層次分析法,以及由遞階多層次綜合評價、主成份分析和回歸分析等數學方法所集成的可持續發展全面綜合評價模型,並以陜北黃土高原為例進行了具體的應用分析與評價。The dividing process is recorded by octree, and then we make out the rapid adjacent - field searching algorithm using envelopment - box ' s recursion feature. this algorithm can also kick off some noise - points from the data cloud. it make the consequent process of surface reconstruction more convenience and precise
分割過程採用八叉樹來記錄,並利用包圍盒的遞歸特性實現了點的鄰域的快速搜索演算法,同時可以有效地排除噪聲點,顯著減少了密集散亂數據點雲幾何建模所花費的時間,提高了建模效率。Like recursive function, recursive sql for db2 express can recursively use the result set to get to the final result
與遞歸函數類似, db2 express的遞歸sql可遞歸地使用結果集來得到最終結果
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