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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
The variables studied were transport of sand, underlying surface roughness, windblown sediment, wind-sand flow structure, soil mechanical composition and amount of wind erosion.
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At a height of 0-20 cm, the height increased while the sediment discharge percent of sand flux decreased; there were significant differences in the sand flow formation under different land-use types.
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4) The amounts of wind erosion and sand sediment were different among different land-use types.
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Effect of forest vegetation on runoff and sediment production in sloping lands of Loess area
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At the same time, better correlative relationship between runoff and sediment production and rainfall and rainfall intensity were testified by multiple regression, but the correlation decreased gradually with the increase of canopy density of forest.
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| | The Yangtze delta, a large complicated delta system, has an area of about 51800 km2, of which the subaqueous area amounts to 29000 km~2. The delta is fed by Yangtze River which extents inland for more than 6300 km and has an annual sediment discharge of 486 million tons. At the mouth of the river, the average tide range is 2.25 m. and the tide currents play an importent role in delta formation. Combined analyses of 700 submarine surface samples and more than 500 cores have led to the follow conclusion... | | 长江三角洲是巨大的潮汐型三角洲,依据水动力作用,沉积特征和生物组合,三角洲主体可划分为三角洲平原相,三角洲前缘相和前三角洲相。三角洲的伴生沉积体系在海区有(?)港幅射砂洲和钱塘江砂坎,陆上为长江南北两侧的滨海平原。各相带又进一步划分出亚相,共有十一种亚相。钻孔揭示,三角洲自上而下的垂直相序与自陆向海沉积相依次出现的顺序基本一致. | | 文摘来源 | | The Luwaitou fringing reefs are one of the well developed reef areas in Hainam lsland. it is an elevated reef. There are two categories of sediments in reef region: coral reef and biodetritus. Physiographic-lily, it could be divided into five fades zones: the reel front, growing reef, reef flat, beach and lagoon; and each zone could be further subdivided. It is realized that, lithological character, grain size component, ccuiposition of sediment and biota (especially microfanna), are the useful ... | | 鹿回头珊瑚岸礁是海南岛岸礁发育较好的地区之一,属于上升礁范畴。礁区沉积分为岸礁沉积和生物碎屑沉积两类。鹿区可划分为五个沉积相带:礁前带、礁沐生专带、礁坪带、海岸带和礁后泻湖带.各带按沉积特征还可细分为2—3个亚带。研究证明:沉积物粒度资料、物质组分和生物(特别是微体生物)的生态条件等可用作指相标志。 | | 文摘来源 | | According to the physical composition and the dynamic characteristics of shore and beach around the Central yellow sea,the shore may be classified into three different types:the shore formed through erosion and silting with alternate high and Low wave energy,high wave energy eroded shore of the abandoned yellow River delta and low wave energy silted shore in the head section of Hal Chow Bay.In this article the variation of the shore and the change of intensity of longshore sediment current are investi... | | 根据黄海中部的海岸和海滩的物质结构和动态特征,可将海岸划分为:高、低波能交互变化及其所形成的侵蚀—堆积岸段;废黄河三角洲的高波能侵蚀岸段;海州湾湾顶的低波能堆积岸段等三种类型。通过各岸段海水动力与岸滩剖面塑造的关系,探讨岸滩演变和沿岸泥沙流强度的变化。 | | 文摘来源 | |   | | << 更多相关文摘 |
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