parametric curvature 中文意思是什麼
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By pre - dividing parametric region of the surface and introducing the concept “ maximum absolute normal curvature ” at a point on the surface, the method adopts “ divide and conquer ” approach triangulating the parametric region of the surface piecewise
該演算法通過對曲面的參數域進行預剖分，以及引入曲面上一點處的「最大絕對法曲率」的概念，採用「分而治之」的方法分片對參數曲面的參數域進行三角形網格剖分。 -
Using local base surface parameterization, a parametric quadric surface approximation method is used to estimate the local surface curvature properties of scattered points based on propagating normal vector direction
首先，計算各點的鄰近點集，選取合適的局部基礎曲面，把鄰近點集投影到相應的局部基礎曲面。 -
Based on the fiber element method, parametric analysis was performed on the behaviors of moment - curvature and lateral load - lateral displacement relationships for the composite beam - columns. the selected parameters were the axial load level, slenderness ratio, steel ratio, strength of the materials, etc. finally, simplified models for the moment - curvature and the lateral load - lateral displacement hysteretic relationships, as well as simplified formula for calculating ductility coefficient were suggested
用纖維模型法系統地分析了軸壓比、長細比、截面含鋼率、鋼材和混凝土強度等參數對m -和p -滯回曲線骨架線的影響規律，提出了壓彎構件m - 、 p -滯回關系模型及延性系數的確定方法。 -
Algorithms of curvature estimation and data simplification of scattered point cloud data are studied. local surface curvature properties on scattered - point data are estimated using a parametric quadric surface approximation, and the key step is local base surface parameteration method which resolves parameteration of scattered - point data. an algorithm is presented for simplifying the scattered point cloud data based on curvature restriction
實例表明，本文演算法的簡化結果既較好地保留了形狀特徵，同時使點的分佈以點雲密集的強制保留區為中心，在向附近擴散的過程中逐漸變稀，避免簡化后點雲的局部過密或局部過稀的情況。
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