等响曲线equal: adj. 1.相等的;平等的,均等的 (to; with ...contour: n. 1.外形,轮廓;周线,轮廓线。 2.等高线,恒值线 ...loudne: 响度contour of equal di lacement: 等位移线contour of equal displacement: 等位移线下载手机词典可随时随地查词查翻译