1.导出了铝液中指示金属浓度(a)的递降式。通式:a_(n-(n+1))(t)=(C_0 multiply from i=0 to n(M_0+■t_i-sum from j=0 to i(m_j)))/((M_0+■t-sum from j=0 to n(m_j))multiply from i=0 to n(M_0+■t_i-sum from j=0 to i-1(m_j))) (1)简式1:a_(n-(n+1))(t)=C_0/(M_0+■(t-t_n))·(M_0/(M_0+■t_c))~n (2)简式2:a_(n-(n+1))(t_n)=a_0k~n (3)在这里,k=M_0/(M_0+■t_c)a 与铝液中指示金属的实际浓度(a_r)有如下关系:a_r=(a_0+a)/(1+a) (4)2.利用实际数据比较,说明了几个公式的应用。 1. Derived the molten aluminum indicator metal concentration (a) of the descending. (M_0 + t_i-sum from j = 0 to i (m_j)) / ((M_0 + t-1) sum from j = 0 to n (m_j)) multiply from i = 0 to n (M_0 + t_i-sum from j = 0 to i-1 (m_j))) + 1 ⁢ t - C ⁢ 0 / M_0 + ■ t - t - n - M_0 / M_0 + t_c - n (2) a - (n- (n + 1)) (t_n = a_0k ~ n Here, k = M_0 / (M_0 + t_c) a has the following relationship with the actual concentration (a_r) of indicated metal in molten aluminum: a_r = (a_0 + a) / (1 + a) (4) 2. Using the actual data comparison, illustrates the application of several formulas.