例句與造句

1. For example, a purely dodecahedral virus has a T-number of 1 ( usually written, T = 1 ) and a truncated icosahedron is assigned T = 3.
2. The most familiar spherical polyhedron is the soccer ball ( outside the United States, Canada, and Australia, a football ), thought of as a spherical truncated icosahedron.
3. The truncated icosahedron can also be described as a model of the Buckminsterfullerene ( fullerene ) ( C 60 ), or " buckyball, " molecule, an allotrope of elemental carbon, discovered in 1985.
4. The iconic ball with a regular pattern of hexagons and pentagons ( see truncated icosahedron ) did not become popular until the 1960s, and was first used in the World Cup in 1970.
5. For instance, the truncated icosahedron ( the familiar soccerball ) has two types of edges : hexagon-hexagon and hexagon-pentagon, and it is not possible for a symmetry of the solid to move a hexagon-hexagon edge onto a hexagon-pentagon edge.
6. It's difficult to find truncated icosahedron in a sentence. 用truncated icosahedron造句挺難的
7. The innermost group of 20 vertices form the vertices of a regular dodecahedron; the next layer of 12 form the vertices of a regular icosahedron; and the outer layer of 60 form the vertices of a nonuniform truncated icosahedron.
8. The 20 vertices of degree 12 and 12 vertices of degree 10 correspond to the vertices of the pentakis dodecahedron, and also respectively to the 20 hexagons and 12 pentagons of the truncated icosahedron, the dual solid to the pentakis dodecahedron.
9. The structure of C 60 is a truncated icosahedron, which resembles an association football ball of the type made of twenty hexagons and twelve pentagons, with a carbon atom at the vertices of each polygon and a bond along each polygon edge.
10. It has a cage-like fused-ring structure ( truncated icosahedron ) which resembles a football ( soccer ball ), made of twenty hexagons and twelve pentagons, with a carbon atom at each vertex of each polygon and a bond along each polygon edge.
11. Clusters ranged in molecular masses but Kroto and Smalley found predominance in a C 60 cluster that could be enhanced further by letting the plasma react longer . [ 3, 6 ] They also discovered that the C 60 molecule formed a cage-like structure, a regular truncated icosahedron.
12. But the search for hollow carbon molecules with many sides bagged an important chemical type in 1985 : the " truncated icosahedron " consisting of 60 carbon atoms bound into a soccer ball molecule with 60 vertices and 32 faces, 12 of them pentagons and 20 of them hexagons.
13. If you look closely at the one on the right, you can see that most of the vertices connect six edges, but a few of them connect only five; I suspect that if you were able to count how many there are of each, you'd find twelve vertices that connect five edges-the same number of pentagonal faces can be found on a truncated icosahedron.
14. The " icosahedral " portion describes the model's most uncommon feature : whereas most grid-based forecast models have historically used rectangular grid points ( a less than ideal arrangement for a planet that is a slightly oblate spheroid ), the FIM instead fits Earth to a truncated icosahedron, with twelve evenly spaced pentagons ( including two at the poles ) anchoring a grid of hexagons.
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