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polyhedron n.(pl. -dra, polyhedrons) 【幾...

polyhistor

4 , the optimal guaranteed control problem for a class of linear tune - delay systems with convex polyhedron uncertain parameters is considered . a state feedback controller designing method is given in terms of linear matrix inequalities 4 、針對一類具有凸多面體形式的不確定參數模型的時滯系統,研究了其保成本控制問題并得到相應控制器設計方法。

There exist only five polyhedra whose faces are all congruent regular polygons , and where the same number of faces meet at every vertex . this was disovered by the greek philosopher plato about 2 , 400 years ago 希臘哲學家柏拉圖約在2 , 400年前已發現正多面體只有五種,因此這五種多面體便被統稱為柏拉圖方體。

The number of images ( including the real object ) formed equals the number of faces possessed by the polyhedron . needless to say , mirror wells are very useful in designing interesting 3d patterns 在這種鏡井中,放入的任何物件均會產生與多面體的面數相同的像(實像加鏡像) 。

The number of images including the real object formed equals the number of faces possessed by the polyhedron . needless to say , mirror wells are very useful in designing interesting 3d patterns 在這種鏡井中,放入的任何物件均會產生與多面體的面數相同的像實像加鏡像。

Object shapes are represented by primitive shapes ( box , cone , cylinder , sphere ) , and complexes of polytopes ( line segments , convex polygons , convex polyhedra ) 對象形狀用基本形狀(方框,圓錐形,圓柱,球)和復雜的多面體(線段,凸多邊形,凸多面體)來表達。

We can obtain the same shape by truncating regular polyhedra belonging to the same grouping in a certain manner . this property is called the duality of regular polyhedra 適當地將同一組多面體的角切割或將面改變例如建立球形網格,所得到的結果是相同的。

From the morphology aspects of tensegrity systems , the author also analyzed and summarized the morphology configurations of some normal tensegrity polyhedron structures 再從張拉整體單元的形態問題入手,分析總結了一些常見張拉整體多面體結構的形態構形。

The symmetries possessed by regular polyhedra allow us to create an image of the entire regular polyhedron by using only one of its faces plus a handful of mirrors 基于正多面體的對稱性,我們可以只用一個面加上鏡子反射來重組整個正多面體。

To improve the roundness of the polyhedron , we can divide the edges into shorter lengths and raise the points of division to a geodesic on the surface of a sphere 由于正多面體不太圓,在每個面上增加連接棒(相當于短程線)可令圓度增加。

To improve the roundness of the polyhedron , we can divide the edges into shorter lengths and raise the points of division to a geodesic on the surface of a sphere 由于正多面體不太圓,在每個面上增加連接棒相當于短程線可令圓度增加。

There exist only five polyhedra whose faces are all congruent regular polygons , and where the same number of faces meet at every vertex 以下五種正多面體,每種都由同樣大小的等邊形組成,并且每個端點都有相同數目的等邊形相接:

This leads us to another contribution of leonhard euler to graph theory , namely euler ' s polyhedron theorem or simply euler ' s formula 這是我們引向l 尤拉對圖論的另一個貢獻,即尤拉多面體定理,或簡稱尤拉公式。

This leads us to another contribution of leonhard euler to graph theory , namely euler ' s polyhedron theorem or simply euler ' s formula 這是我們引向l ?尤拉對圖論的另一個貢獻,即尤拉多面體定理,或簡稱尤拉公式。

Polygin , polyhedron , and other complicated products , especially in sports , medical , automobile , and electrical applications 多邊、多角及其他復雜成品,特別是運動用品、醫療用品、汽車用品、電子用品等精密性應用。

Polyhedron - base structure , which consists of space - filling polyhedron models , is a new type of space structure 摘要多面體空間結構是一種新型的空間結構類型,基于能夠填充三維空間的多面體模型而構成。

In this article , we introduce the oriented volume concept of simple tetrahedral , and get the computation formula for polyhedron at last 引入了簡單四面體的有向體積概念,最后得多面體體積計算公式。

We can obtain the same shape by truncating regular polyhedra belonging to the same grouping in a certain manner 適當地將同一組多面體的角切割或將面改變(例如建立球形網格) ,所得到的結果是相同的。

Abstract : a practical staining method for counting polyhedra ( pibs ) in nucleopolyhedrovirus insecticide was developed 文摘:本文介紹了一種直接檢測病毒殺蟲劑產品中多角體數量的染色計數方法。

Through origami , we can see that kaleiodocycles are more closely related to regular polyhedra in terms of structure 通過摺紙制作,我們可以看出在結構上萬花環與正多面體之間的關系更大。