?????????? ????????? ?'? ???? ??????? ?????? ??? ??????????? ??????, ?? ??????? ??? ???????????? ?????? ??????? ???, ?????? ??? ??? ???????????, ????????? ??????? ?????? ??; ????????? ????????? ???? ??-???? ??????? ?????? ???? ???? ?????? ???? ???????? ???????? ???????? ????????? ??? ??????? ??????; ?

?????? ??????????? ??? ???????????????, ?????? ??? ???????? ????? ????????? ??????????? ????????? ??????????? ??????? ???? ??? ???? chemical ????????? ??????????? ???? ????????????? ??????? ??????????????? ???????? ??? ??? ?????

????????? ????????? ????? ?????????? ???? ???? ??????:

(1) ??????????????? ??????? ?????? ?????? ????????????? ???? ???? ???? ????, ?????? ????? ???????? ??????? ????, ??> 1 ???

(2) ????? ???? ?????? ?????? ?????? ???? ???????, ??????? ????????? ?????? ???????, ?? <1 ???

?