Terms containing partial differentiation with respect to x

Subject	English	Russian
math.	partial differentiation with respect to x	частное дифференцирование по x (A comma followed by a subscript of a denotes partial differentiation with respect to x)
math.	where a comma preceding a subscript j indicates partial differentiation with respect to xj	запятая, предшествующая нижнему индексу j, обозначает частное дифференцирование по xj