词汇	流线形外形
释义	流线形外形 slender contour
随便看	direct flight direct flight muscle direct flights direct flights between China and Africa direct flight/straight flight direct flooding system direct flotation Direct flotation in acidic medium Direct flotation in basic medium direct flow direct-flow direct flow burner direct-flow burner direct flow cooling direct-flow cooling direct-flow demineralization direct flow indicator direct flow water heater direct-flow water supply system direct fluidics of wall-attachment direct fluorescence antibody direct fluorescence antibodytest direct fluorescence antibody test direct fluorescence microscopy direct fluorescence mircroscopy