alluvial district 中文意思是什麼

alluvial district 解釋
沖積地區
  • alluvial : adj. 【地質學；地理學】沖積的。 alluvial deposits 沖積物。 alluvial gold 沙金。n. 沖積土[層，礦床]，淤積土。
  • district : n 1 區；管區；行政區，市區。2 地區，區域。3 〈美國〉（各州眾議員）選舉區；〈英國〉教區，分區。vt ...
  1. Furthermore, corresponding countermeasures were put forward. 4. seven types of soil, yellow soil, purple soil, red soil, limestone soil, and alluvial soil and paddy soil are scattered in this district

    該區有黃壤土、紫泥土、紅壤土、黃棕壤土、石灰巖土、沖積土、水稻土等7個土類，其中黃壤占總面積的80以上。
  2. After integrated studies on sedimentary facies and geochemical character in this area, it is concluded that the oil and gas reserves in this district are mainly controlled by fans such as fan - detal, denthic fans and alluvial fans. and that pool foration in the area under study is of multi - phase character

    在綜合研究沉積相和油藏地球化學的基礎上，得出西北緣的油氣儲量主要受扇體（扇三角洲、水下扇和沖積扇）控制，並且具有多期成藏特徵的認識。
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