礫石砂丘 的英文怎麼說
中文拼音 [lìdànshāqiū]
礫石砂丘
英文
gravel dune-
The sahara ' s topographical features include shallow basins, large oasis depressions, serirs or regs ( gravel - covered plains ), plateaus, mountains, sand sheets, dunes and sand seas ( ergs )
撒哈拉沙漠地形特點包括：淺的盆地、大的蕭條的綠洲、砂礫性沙漠或礫質沙漠（碎石覆蓋的平原） 、高原、沙席（小沙原） ，沙丘和沙海（砂質沙漠） 。All of theses database was integrated into a land information system, which can be used to land evaluation and land use analysis. the second part is the application of soter land information system in land evaluation, based on water balance model watsat, crop simulation model ps 123 and ales ( automated land evaluation system ). the handan land evaluation model was built in ales based on expert knowledge and farmer s " experiences, it includs three decision trees, namely soil erosion risk, soil water condition and soil fertility
以邯鄲地區1 25萬soter土壤土地數據庫為基礎，探討了土壤參數區域化問題，並利用watsat區域水分平衡模型，研究了邯鄲地區區域水分平衡：大部分地區土壤水分滿足夏玉米生長需求， （ suff ）值為0 . 8 - 1 . 0 ，非常適宜；部分地區如大名地區、邯鄲和永年部分地區、涉縣溝谷坡梁地區土壤水分適宜夏玉米生長， suff值0 . 4 ? 0 . 8 ；不適宜地區， suff值0 . 2 ? 0 . 4 ，主要集中於丘陵山區以及平原古河谷地礫石和粗砂分佈區。Indeed, the jack hills zircons ? separated by perhaps thousands of kilometers from their source ? were found embedded in a fossilized gravel bar called the jack hills conglomerate
事實上，在傑克丘發現的鋯石，就是深埋在名為傑克丘礫巖的化石砂礫層里，而它們很可能是從幾千公里遠的地方被帶到那裡的。
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