例句與造句

1. The equations for negative spatial curvature were given by Friedmann in 1924.
2. Two, is zero spatial curvature _ a so-called flat universe.
3. Three is negative _ " saddle-shaped " spatial curvature.
4. One, is positive spatial curvature _ that the universe is like a huge sphere.
5. The universe seems " low density " and therefore of negative spatial curvature.
6. It's difficult to find spatial curvature in a sentence. 用spatial curvature造句挺難的
7. It is incompatible with observations that definitely rule out such a large negative spatial curvature.
8. Thus, Flamm's paraboloid is useful for visualizing the spatial curvature of the Schwarzschild metric.
9. Since it features both zero energy density and maximally negative spatial curvature, the Milne model is contradicted by flatness.
10. These and other astronomical measurements constrain the spatial curvature to be very close to zero, although they do not constrain its sign.
11. Hubble believed that his count data gave a more reasonable result concerning spatial curvature if the redshift correction was made assuming no recession.
12. Therefore, regardless of the shape of the universe the contribution of spatial curvature to the expansion of the Universe could not be much greater than the contribution of matter.
13. The Hubble parameter can change over time if other parts of the equation are time dependent ( in particular the mass density, the vacuum energy, or the spatial curvature ).
14. General relativity merely adds a connection between the spatial curvature of the universe and the energy of such a particle : positive total energy implies negative curvature and negative total energy implies positive curvature.
15. Third, the curvature index " k " determines the sign of the mean spatial curvature of spacetime averaged over sufficiently large length scales ( greater than about a billion light years ).
16. He was the earliest to employ Alexander Friedmann's and Georges Lema顃re's non-static solutions of Einstein's gravitational equations describing a universe of uniform matter density and constant spatial curvature.
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