accumulation terrace 堆积阶地 ; 淤积阶地
Consequently, an approximate time series of terrace accumulation is established.
从而初步建立了三峡库区阶地堆积的时间序列。
There are some softer accumulation horizon in the ox-bow lake and season river on the huge mucky soil of alluvial and lacustrine deposits in accumulation terrace around Dongting lake.
在洞庭湖漫滩阶地的冲湖积淤泥质软土上，分布着一些次级牛轭湖和季节性洪道成因的极软淤积物。
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