0 to have a continuous up and down shape or movement, like waves on the sea: --
the undulating countryside
Following the latter state, a good portion of the lower part of the core transformed slowly into an elliptical cross-sectional shape, and the liquid surface began to undulate.
The oil is sent into vibration and the surface starts to undulate, changing constantly.
The process described below is not linear, but undulating and convoluted.
Two techniques for connecting the orifices in the undulating wall to stationary pressure sensors were used.
The relief is undulating to hilly, criss-crossed by river tributaries and valleys for which a twin-terrace pattern is often observed.
Beyond, the journey south broke new ground, and soon the mountains were left behind, replaced by the featureless, undulating polar plateau.
The third order polynomial fits because it can be high at one end and undulate through the 20s.
Slender forms are narrower and longer, with a sub-terminal kinetoplast and no obvious undulating membrane.
