??? ??? ??? ?????????? ????? ????? ?????? ??? ???? ????? ?????? ?????? ????? ?? ???? ????? ?????? ?? ????? ???? ?????? ??? ?????? ???? ??? ??????? ?????? ??????????.????? ?????? ?????? ????? ????? ???? ????????? ?? ???? ?????? ?????? ??????? ??????? ?? ??????? ??????? ??????.At first these equipment were being massive and complex. After Lee de Fore