词汇	persistent waves
释义	persistent waves 等幅波
随便看	features of ore-bearing structures features of ore deposit features of origin features of periodic fluctuation features of pitch Features of plot features of poetry school features of pollution features of program features of programme features of projection features of pronunciation features of property-right features of published papers features of qualities Features of rainstorm features of readers Features of Record View Classes features of research features of roll system Features of rough set theory features of running a university features of running school features of running schools features of scalechange