dBrsEconomist¹⁹⁰⁵⁰⁺⁹ 基本例句 n.以分贝表示的声音节目信号的相对电平¹⁰⁰ Accordingly, the I-V characteristics of N and P type DBRs due to three kinds of current mechanisms:the drift- diffusion, pure drift and thermionic emission currents, have been analyzed theoretically. 并以此为依据,从理论上分别分析和比较了多子漂移扩散、纯漂移和热电子发射电流机制所起的作用。 dictall