The method of three-dimensional coordinate can observe both the deformation of dam and the three-dimensional coordinate of the observed point so that it can gain the horizontal and vertical displacement values.是什么意思_The method of three-dimensional coordinate can observe both the deformation of dam and the three-dimensional coordinate of the observed point so that it can gain the horizontal and vertical displacement values.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句