coke oven temperature undulation

compensation of undulation

curved surface undulation

fluctuation and the undulation

geoid undulation

geoidal undulation

improving ratio of undulation variance

interface undulation

light intensity undulation variance

m iddle undulation

Power undulation

pressure undulation

quarter undulation mica plate

quarter undulation plate

random undulation

rotate speed undulation

Sea-bottom Undulation

secondary undulation

surface undulation

Terrain Undulation