alluvial silt

基本解释

The seabed here consisted of alluvial silt and mud deposits.
此地的海牀由沖擊到這裡的細沙和沉積的淤泥搆成。
It is a strip of alluvial silt about 80km (50 miles) long and 17km wide that is home to some 650,000 people.
崇明島由泥沙沖積而成，呈長條形，長約80公裡（50英裡），寬約17公裡，全島有居民約6萬5千人。
Silt sand was largely used in the roadbed of a main road locating in alluvial plain in Haikou City. This paper discusses the construction technical essentials of this silt sand roadbed.
海口某城市乾道位於沖積平原地區，路基填築用土大部分採用周邊地區粉砂土，本文主要闡述粉砂土路基施工技術要點。