The reservoir dam is an earth dam with a clay core wall, built earliest in our country.
水库大坝是我国建设最早的碾压式粘土心墙土石坝。
The validity of the method is demonstrated by calculating the observation data of an earth dam.
通过对某土石坝观测资料的计算，表明这一方法是可行和有效的。
The observation of longitudinal horizontal displacement of an earth dam is to observe the relative strain of the length between two displacement points.
土坝纵向水平位移观测是观测两两位移点间长度的应变值。
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