delta notation
A notation for denoting the prevalence of an isotope, equal to the normalized ratio of…A notation for denoting the prevalence of an isotope, equal to the normalized ratio of one isotope to another in a sample relative to that same ratio in a standard.
Значение
значений: 1(physical, неисчисляемое)A notation for denoting the prevalence of an isotope, equal to the normalized ratio of one isotope to another in a sample relative to that same ratio in a standard.
Уроки к слову
уроков: 1- A1Исчисляемые и неисчисляемые существительные — Потому что оно может быть неисчисляемым