??????? 7~9? ?????? AHA??? 11?? ?????? 6? ? 17?? ??? ?? ‘????? AHA20%’ ‘?????AHA40%’ ‘???A―H’ ‘??? B―H’ ? 4? ??? ???(PH3)? ????? ????.
???? ?? ????? ? ??????? ??? AHA??? 50??? ??? ??.
???? AHA???? ?? ??? ????? ????? ?? ??????? ?? ? ?? ????.
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