astro-geodetic undulation
coke oven temperature undulation
compensation of undulation
curved surface undulation
cyclic undulation of the real estate
fiber bundle undulation
fluctuation and the undulation
geoid undulation
大地水准而异常
大地水准面起伏
正高化算
大地水准面波动
大地水准面
大地水平面起伏
improving ratio of undulation variance
light intensity undulation variance
quarter undulation mica plate
quarter undulation plate
rotate speed undulation