实: solid二: two次数: number of times域: land within certain boundari ...实二次型: real quadratic form实二次域: real quadratic field实二次超曲面: real quadric hypersurface实二: jitsuji; saneji数域: number field二次数字复用器: secondary digital multiplexer多实二: tamiji实二郎: jitsujiro; sanejiro次数: number of times; frequency 次数不多 not very often; 练习的次数越多, 熟练的程度越高。 the more you practise, the more skilful you'll become波数域: wavenumber domain参数域: parameter field常数域: constant field; field of constants复数域: complex domain; complex field; complex number field; field of complex numbers函数域: domain of function; function field实数域: field of real numbers; real number field系数域: coefficient domain; field of coefficients; field of scalars二次: secondary; [数学] quadratic波数域褶积: convolution in wave number domain代数函数域: algebraic function field; field of algebraic functions代数数域: algebraic number field高斯数域: gaussian number field