Terms for subject Mathematics containing parts

English	Russian
if one could gather all the parts of an exploding atom, their total weight would be slightly less than the weight of the original atom	если бы ... то ... бы
parts per thousand	промилле
3 parts solution to 4 parts water	3 части раствора на 4 части воды
proportional parts method	метод пропорциональных частей (метод линейной интерполяции)
secondary parts of a triangle	элементы треугольника
secondary parts of a triangle	второстепенные элементы треугольника
tens of parts per billion	десятки миллиардных долей (Spring_beauty)
the parts in rubbing contact	трущиеся части
the supplies of machine parts are exhausted	запас истощился
then a repeated integration by parts leads to the formula	повторное интегрирование
these equations can have exponentially growing or decaying parts as well as pieces which oscillate	растущие или затухающие члены