n.1.平坦,平滑。2.直率,果断。3.无变化,单调。4.(音的)低沉;(市况的)萧条。amplitude flatness: 振幅平滑度bandpass flatness: 带通均匀性; 通带平坦度cloud flatness: 点群的平面度degree of flatness: 扁平程度film flatness: 胶片平整度下载手机词典可随时随地查词查翻译