堆积阶地
- 网络Accumulation terrace;accumulational terrace;constructional terrace;fill terrace
堆积阶地-
第一级阶地为堆积阶地，阶地面平坦，而且很宽。
First-class order is accumulation terrace , the stage floor flat and very wide .
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永定河上游晚更新世晚期以来的堆积阶地年代测定
Terrace dating of upper Yongding River Drainage Basin since late Pleistocene
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在扎陵湖和鄂陵湖谷地分布着多级湖岸堆积阶地或基座阶地、多级湖相沉积和古高位湖相沉积；
Multi-level lakeshore piled terraces or base terrace , lake sediments and high level paleo-lacustrine sediments distribute in the Lake Zhaling and Lake Eling valley basin .