Growth as measured by the mean number of and 4 weeks after last administration of levamisole.在停喂左旋咪唑后第2,4周测定每组鱼的体重,求取平均值.Objective To evaluate the long - term efficacy of levamisole to recurrent oral ulcer ( ROU ).目的探讨左旋...
它是三极管放大器的等效电路.It is the equivalent circuit of a triode amplifier circuit.三极管能升高电压.The triode steps up voltage.三极管接法): 中Mu小型灯丝结构.U 4 triode connected: Medium MU small mass filamentary heating structure....