- 更多网络例句与正四面体相关的网络例句 [注：此内容来源于网络，仅供参考]
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We obtain three classes of polyhedra which have high symmetry. they are regular tetrahedral class belonging to tetrahedral group , regular hexahedral class and regular octahedral class belonging to octahedral group.
本文将Goldberg在正十二面体上构筑多面体的方法推广到其它柏拉图多面体上，分别得到了三类具有较高对称性的多面体：属于四面体群的正四面体类和属于八面体群的正六面体类、正八面体类。
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As we all know,there is one Simson line at any point on the circumference of triangles,but in this paper, LHP theorem shows that the above conclusion is not correct for any quadrilateral pyramid in three-dimensional space and also during proving LHP theorem,fixed value theorem is proved,at the same time,one guess about the point H and point P on circumscribed sphere of tetrahedron has been concluded.
众所周知，三角形的外接圆周上任一点存在一条 simson 线，而 LHP 定理则指出对于正四面体该结论是不能推广到三维空间上的，并且在论证 LHP 定理的过程中得出了定值定理，同时作为一般四面体的外接球球面上的 H 点、P 点的分布，给出了一个猜想。
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The equations of two classes of 3D polynomial maps that are equivariant with respect to the rotational symmetries of either a regular tetrahedron group or a regular octahedron group are strictly given, on the basis of which the properties of the general Julia sets created by these 3D polynomial maps are discussed and proved.
从理论上分析并证明了三维多项式映射满足等变的条件，精确地给出了关于正四面体群和正八面体群具有旋转不变对称性的两类三维等变映射的具体公式，在此基础上讨论并证明了三维多项式映射的广义Julia集所具有的性质。
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A series of convenient methods for the preparation of the paper-folded regular octahedron, regular tetrahedron, and regular cubic cone are presented here.
介绍纸折正四面体、正八面体和正方锥形的简易制作方法，并推广应用于制作天然硅盐的多种复杂阴离子结构及某些多酸阴离子结构的模型
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Fractal with OPENGL programming, you can see a rotation to regular tetrahedron, each tetrahedron is a fractal pattern interview.
详细说明：分形，用OPENGL编程，可以看到一个旋转地正四面体，正四面体的每一面试一个分形图案。
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For two possible geometric structures,square and regular tetrahedron,the electronic structures of ground state and structure parameters of the O_4,O-_4 and O+_4 are calculated according to the principle of minimum energy.
计算了2种可能的空间结构——正方形和正四面体，分别得到了这2种结构的中性分子O4，正一价分子O+4和负一价分子O-4的基态电子结构，并根据能量最低原则确定了各自的结构参数，从而得到了O4分子2种结构的基态总能量、一价电离能及电子亲合势能。
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A map was achieved in detail for the optimal placement of ablation electrode. According to assumption of complete destruction of tumor and its 0.5 cm margin by 5.0 cm ablation device with this method, calculating results were obtained as follows: a tumor of 4.1 ～ 4.3 cm in diameter required 4 ablation at least by the regular tetrahedron way, a tumor of 4.4 ～ 5.6 cm in diameter required 5～8 ablation at least by the regular prism way, a tumor of 5.7 ～ 6.0 cm required 12 ablation at least by the three layers overlapping way.
根据RFA治疗原则消融范围须超越肿瘤周边 0 。5cm以上；按照覆盖类球体肿瘤的计算结果，采用伞径 5 。0cm的射频针，治疗 4.1～ 4.3cm的肿瘤须用正四面体法至少布针 4个点，治疗 4.4～5 。6cm的肿瘤用正棱柱法至少布针 5～ 8个点，治疗 5 。7～ 6 。0cm的肿瘤用三层重叠法至少布针 12个点，方能达到较彻底覆盖灭活肿瘤的效果。
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Particle system and Opengl mapping technology, according to the nature of being tetrahedron, a tetrahedral formation!
利用粒子系统和Opengl贴图技术，根据正四面体的性质，生成一个正四面体！
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The basic process of tetrahedral octree spatial decomposition for using directly in finite element analysis is described.
然后在此基础上详细论述了正四面体八叉树法划分空间、直接生成四面体网络单元的基本过程。
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We obtain three classes of polyhedra which have high symmetry.
本文将Goldberg在正十二面体上构筑多面体的方法推广到其它柏拉图多面体上，分别得到了三类具有较高对称性的多面体：属于四面体群的正四面体类和属于八面体群的正六面体类、正八面体类。
- 更多网络解释与正四面体相关的网络解释 [注：此内容来源于网络，仅供参考]
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crystal structure：晶体结构
这是一个理想的模型,晶体结构=晶格+基元.后面将讲到,X射线衍射证实了晶体结构(Crystal structure)的周期性. 如Cu(铜)是面心立方结构(fcc);K(钾)是体心立方结构(bcc);SiF4(四氟化硅)是基元为正四面体的体心立方结构. 原胞往往不能反映晶体的对称性,
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fuel：可燃物
由图1之流程可以清楚地看出:可燃性物质要燃烧需要具备:(1)可燃物(Fuel);(2)氧气(Oxygen);(3)热源(Heat);(4)连锁反应(Chain reaction)四者缺一不可,吾人可利用一简单之正四面体来表示燃烧的四要素及其内容;如图2.
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orthocentric tetrahedron：垂心四面体
orthocentric quadrangle 垂心四边形 | orthocentric tetrahedron 垂心四面体 | orthocomplement 正交补
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orthocomplement：正交补
orthocentric tetrahedron 垂心四面体 | orthocomplement 正交补 | orthogonal 直交的
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regular star polyhedron：正星形多面体
regular star polygon 正则星形多角形 | regular star polyhedron 正星形多面体 | regular tetrahedron 正四面体
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regular topological space：正则拓扑空间
regular tetrahedron 正四面体 | regular topological space 正则拓扑空间 | regular transformation 正则变换
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regular terms：正则项
regular surface 正则曲面 | regular terms 正则项 | regular tetrahedron 正四面体
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regular tetrahedron：正四面体
regular terms 正则项 | regular tetrahedron 正四面体 | regular topological space 正则拓扑空间
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regular tetrahedron group：正四面体群
正数|positive number | 正四面体群|regular tetrahedron group | 正态分布|normal distribution
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homocercal fin：正尾(鰭)
正四面体 positive tetrahedron | 正尾(鰭) homocercal fin | 正硅酸盐 orthosilicate