dam crest的用法和样例：
例句
- It is a few projects of crest spillway of rock-fill dam at home and abroad at present.
摘要目前国内外有关堆石坝坝顶溢洪道的工程实例较少，对其结构设计理论的研究也不多，仅有少量的实验。 - In this paper, the method of iteration weighting adjustment is applied to deal with the displacement vector on the top of a dam.
本文采用送代位移权平差方法求取大坝坝顶变形监测点的位移向量。
