? ?????? ???? ????????????? ???????? ????????? ???????? ?????????? ?? ????, ??? ?????????? ???????? ?????? ? ??? ???????????? ??, ??????? ?????????? ?????????????.??????????? ?????? ???-???? ????? ??????? ?????? ????? ???? ?????? ???????[5] The really transportable engine was invented in 1839 by William Tuxford of Boston, Lincolnshire who began man