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To a good approximation the scattering from deuterium nuclei is simply the sum of the scattering from neutrons and protons.

A result identical with Eq. (8.45) can be obtained as a good approximation even when DB = DA.

This eddy-current loss may be expressed to close (or in good) approximation by the relation ...

Источник: Русско-английский научно-технический словарь на Gufo.me