?? ???? ????? ??? ?? ???? ??? ??? ??? ?? ??? ????? ? ?? ?? ??? ????? ????.?? ?? ??? ??? ?? ??? ??? ?? ?? > ??? > ?? > ? ???? ?????.Within an advance that can significantly lower the amount of Vitality desired for crude oil fractionation, MIT engineers have developed a membrane that filters the elements of crude oil by their molecular dimensions.???