梯形滤波器laddering: 烂针; 梯式递进; 脱散性; 纵向脱散laddered: 设有梯子的ladderlike: 梯状的; 梯子状的ladderdiagram: 梯形图ladderlikescalarscalariform: 梯状的下载手机词典可随时随地查词查翻译
