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diluvial 短語和例子diluvial , deluvianadj....

diluvial deposits

The elementary idea of the reference units method can be described as follows : firstly , by the setting of double series of reference units , we can control the highest and lowest land quality class of each village or town ; secondly , the class of the arable land will be get through the contrast between the arable land with the reference unit which has been selected in the same area , the difference in quality is the key factor to classify the land . the results show , 87 . 6 % of the lands from i to iii distribute on alluvial and lacustrine plains , where the associated soils are mainly grey fulvo - aquic and calcareous concretions black ones . and 61 . 4 % of them from iv to vi distribute on slightly rolling parts with mainly yellow - cinnamon soil developed from the diluvial and slope deposits 分等結果表明:臥龍區等的耕地中,有87 . 6分布在沖積、湖積平原區,主要土壤類型是在河流沖積物上發育形成的灰潮土、在湖相沉積物上發育形成的砂姜黑土;等耕地中,有61 . 4分布在壟崗區,主要土壤類型是洪坡積物上發育形成的黃褐土:而、等耕地集中分布在丘陵區,主要土壤類型是殘坡積物上發育形成的粗骨性黃褐土,等別結果分布總體上體現了不同地貌類型、土壤條件下耕地質量的差異。

The phreatic groundwater in the diluvial fan in front of the helan mountain is mainly recharged by precipitation and the lateral flow from the helan mountain ; the phreatic groundwater both in the diluvial fan of the qingtongxia gorge and in the fluvial plain is mainly recharged by the influent seepage of irrigation water from the yellow river 賀蘭山洪積扇單一潛水主要接受山區側向徑流及大氣降水補給;青銅峽洪積扇單一潛水及沖湖積平原上覆潛水,主要接受黃河灌溉水的入滲補給。