矩形脉波列 rectangular pulse: 方形脉冲; 矩形脉冲pulse train: 脉冲波列; 脉冲串; 脉冲列(串); 脉冲群链; 脉冲序列train pulse: 序列脉冲rectangular dc pulse: 矩形直流脉冲rectangular pulse generator: 矩形脉冲发生器下载手机词典可随时随地查词查翻译