例句與造句

1. The field of nonlinear optics studies the changes to material polarization density under extreme electric fields.
2. where is the electric constant, the relative static permittivity, and is the polarization density.
3. That is, where the modeled medium includes a step in permittivity, the polarization density corresponding to the dipole moment density
4. dipole moment between two point charges, the volume density of these is the polarization density "'P " '.
5. The polarizability of individual particles in the medium can be related to the average susceptibility and polarization density by the Clausius-Mossotti relation.
6. It's difficult to find polarization density in a sentence. 用polarization density造句挺難的
7. If observation is confined to regions sufficiently remote from a system of charges, a multipole expansion of the exact polarization density can be made.
8. The SI unit of measure is coulombs per square meter, and polarization density is represented by a vector "'P " '.
9. The positive and negative charges in molecules separate under the applied field, causing an increase in the state of polarization, expressed as the polarization density.
10. In particular, truncating the expansion at the dipole term, the result is indistinguishable from the polarization density generated by a uniform dipole moment confined to the charge region.
11. For a certain volume element in the material \ Delta V, which carries a dipole moment \ Delta \ mathbf p, we define the polarization density "'P " ':
12. The electric field is determined by using the above relation along with other boundary conditions on the polarization density to yield the bound charges, which will, in turn, yield the electric field.
13. Evidently, inclusion of higher multipoles signifies that the polarization density "'P "'no longer is determined by a dipole moment density "'p "'alone.
14. Polarization density also describes how a material responds to an applied electric field as well as the way the material changes the electric field, and can be used to calculate the forces that result from those interactions.
15. It is defined as the constant of proportionality ( which may be a tensor ) relating an electric field "'E "'to the induced dielectric polarization density "'P "'such that
16. The susceptibility is defined as the constant of proportionality ( which may be a tensor ) relating an electric field "'E "'to the induced dielectric polarization density "'P "'such that
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