??????????? ?????? ???????????????????????? ???????????????? ????????? ??????????? ?????? ????????? ?????? ????????? ?????????????????????????????????? ?Máy b?m th?c ph?m ph?i ch?u ???c s? thay ??i nhi?t ?? t? l?nh sang nóng ho?c t? nóng sang l?nh.?????????????? ?????? ??????B?m d??c ph?m: B?m d?ch truy?n, cao d??c trong s?n xu?t thu?c, d?ch thu