differential-field motor [电] 他激差绕直流电动机 ; 他激差绕直流电念头

differential-field series motor 串激差绕直流电动机

partial differential field [数] 偏微分场

differential field motor 他激差绕直流电动机

differential field series motor 串激差绕直流电动机

galois theory of differential field 微分域的伽罗瓦理论

differential stress field 应力差场

differential excited field winding [电] 差励绕组

differential wound field [电] 差绕磁场