| 词汇 | torus |
| 释义 | torus noun[ C ] uk /ˈtɔː.rəs/ us /ˈtɔː.rəs/pluraltori torusnoun[C] (MATHEMATICS)mathematics, science specialized a shape that is a circular tube that is hollow inside : 圆环面（形状） A popular shape for space stations is the doughnut shape, also called a torus.空间站常用的形状是甜甜圈形状，也称为圆环面。 You can compare the torus to an inflatable lifebelt. This is a view inside the central chamber - or torus - of the Joint European Torus project for fusion energy. When the magnetic field and the solar wind collide, the Van Allen radiation belts are formed - a pair of concentric, torus-shaped regions of energetic charged particles. Geometrical shapes -cornered circularly congruently conic cylindrically lozenge orbicular ovally ovoid parallelogram pentagon polyhedron polytope prism pyramid quadrilateral rectangle rectangular rhombus three-dimensional torusnoun[C] (ON COLUMN)architecture specialized a rounded part at the base of a column above the plinth(= the square block on which the column stands): The torus can be seen in Egyptian, Greek, and Roman style pillars. The base consists of a plinth below a torus which joins the plinth at right angles. Parts of buildings: arches, columns & beams abutment arch architrave archway beam beamy capital colonnade Corinthian Doric ionic joist keystone plinth portico soffit vault vaulted vaulting torusnoun[C] (ON BODY)anatomy, medical specialized a rounded piece of bone that sticks out from a surface in the body: 骨隆凸 The hard bumps that you can feel in your mouth are most likely harmless growths of extra bone called tori.你口腔中可以感觉到的硬块很可能是无害的额外骨骼生长，被称为骨隆凸。 In these apes the torus above the eyes is well developed. Swellings & lumps acoustic neuroma actinomycosis adenitis adenoma hyperplastic nodules anasarca bloated dropsy elephantiasis encephalomyelitis enchondroma equine encephalitis inflamed inflammatory pouchy puffy thyroid nodule tumescence tumid tumour turgidity Examples of torustorus In this case, a stable torus is the attractor. We do not place it on a torus. In the second case the distance between the two common points along either torus-line is always n/2. Each one of the 32 torus-lines contains 2 marks of its own direction. We also deduce the existence on the torus of analytic diffeomorphisms that are rank one and weak mixing. The connected configuration space of a so-called cylindric billiard system is a flat torus minus finitely many spherical cylinders. The torus splits into three invariant sets on which the dynamics are quite different. Global rigidity for lattice actions on tori and new examples of volume preserving actions. In the latter case the system will be isomorphic to a skew translation of the torus by an isomorphism with some additional nice properties. The proof for torus maps homotopic to a positive shear is identical, so we omit it. We wish to prove that an area-preserving map of the torus homotopic to a shear with mean translation number 0 must have a fixed point. Let f be any homeomorphism of the torus. Let f and g be symplectic diffeomorphisms of tori. In particular, we see that any higher rank lattice action on a torus that is isotopic to the identity must not have good dynamical properties. We refer to such a situation by saying that one has a degenerate torus. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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