权威例句
DrumlinDrumlinDrumlin formation by subglacial meltwater erosionDrumlin Formation Related to Inverted Melt-Water Erosional MarksDRUMLIN FIELDS, DISPERSAL TRAINS, and ICE STREAMS IN ARCTIC CANADAA theory of drumlin formation by subglacial deformationDrumlinization and drumlin-forming instabilities: viscous till mechanismsAn instability mechanism for drumlin formationActive drumlin field revealed at the margin of Mulajokull, Iceland: A surge-type glacierRapid erosion, drumlin formation, and changing hydrology beneath an Antarctic ice stream