Terms for subject Mathematics containing the substance

English	Russian
if some material substance were placed between these poles, then the flux density would change	если бы ... то ... бы
the multitude of substances	множество различных веществ
the substances in contact	соприкасающиеся вещества
the test substance	исследуемое вещество
the test substance	изучаемое вещество
there is no need that the magnetic substance be a metal	нет необходимости в том, чтобы
this was proved shown by rutherford to exits at the center of the atoms of all substances	доказано существование