在二十世纪六七十年代，铅沉积就在土壤和雪中不断累积，这主要是美国的含铅汽油排放的后果。
Lead deposits, which accumulated in soil and snow during the 1960s and '70s, were primarily the result of leaded gasoline emissions originating in the United States.
一旦完成了这个，河流带来的淤泥会沉积在此处，回报是丰厚的：产量是被雨水滋养的土壤的四到五倍。
Once this was done and the silt carried down by the rivers was planted, the rewards were rich: four to five times what rain-fed earth would produce.
该小组正在调查碳酸钙矿物中的元素，这些碳酸钙矿物沉积于距今2至170万年的湖内部及周边的淤泥和土壤中。
The team is investigating elements in the mineral calcium carbonate, which were deposited in the mud and soil in and around a lake between two and 1.7 million years ago.
存在：氦存在于自然大气中，在土壤中沉积，而且能从空气中分离出来。
Occurrence: Helium comes from natural gas, deposits within Earth, and can be isolated from air.
这里的土地里富含氧化铁，土壤里的铁质经过氧化慢慢沉积下来，逐渐形成了炫目的红棕色。
The soil contains such components as oxidized iron, after a long period of oxidation, gradually added and mixed in the soil that produced this extraordinary reddish brown soil.
河流的出口是河流进入海洋的地方。大多数的河流在出口处变得非常宽阔，土壤在那儿沉积，形成三角洲。
The river's mouth is the place where a river goes into the ocean. Most rivers become very wide at their mouths, forming deltas from soil deposited there.
土壤微粒沉积在自己的河床上，使河流变浅。
Particles of soil are deposited on the riverbed itself, making the river shallower.
降雨次数和降雨量是左右溶质在土壤剖面中沉积位置高低的决定性因素。
Rainfall frequency and amount are thus crucial factors in determining the position of deposition in a soil profile.
样品类型包括岩石样品，水分沉积物，水样以及偶而采用的大间距土壤样品。
The sample types include rock sample, stream sediments, water samples and rarely, widely spaced soil samples.
泥沙沉积灾害发生在湖区，突出表现为洪涝、土壤潜育化和血吸虫感染。
The disasters due to silt deposition took place in the lake area and mainly expressed in flooding, soil gleization and snail fever.
但至少有一项已经搁浅：昆士兰州议会拒绝立法禁止开荒——开荒会加速土壤侵蚀，导致更多沉积物流入太平洋。
At least one is stalled, after the Queensland Parliament rejected laws to prevent land clearing, which speeds erosion and can lead to more sediment flowing into the Pacific Ocean.
在河流漫滩和三角洲地带由洪水冲刷泥沙沉积而形成的土壤类型。
Alluvial soil a type of soil formed on river floodplains and deltas, where new sediment is deposited on the land during floods.
在复合坡面，随坡面的陡、缓、凹，土壤侵蚀表现强、弱、沉积；
On compound slope field, the soil erosion displayed strong, week and depositional on steep, gentle and concave slopes, respectively.
笔者提出一种基于不同时相实测数据建立交互数字高程模型研究坡面土壤沉积与搬运间的量化关系的方法，进而获得小流域坡面不同时相间的土壤侵蚀量。
Using alternant dem the study raised a new method based on the relation of sedimentation and precipitation to acquire the amount of soil erosion on hillslopes.
林地被开垦破坏后，坡面土壤元素的空间分布受人为犁耕活动、侵蚀沉积搬运过程和元素性质的影响。
After forestland being reclaimed, spatial distributions of soil elements would be affected by plowing, erosion-deposition-transportation, and soil element properties.
研究了不同兑水量情况下，除草剂在免耕麦茬土壤表面和麦茬上的沉积规律。
The study of herbicide deposition on soil surface and wheat stubble in different wheat mulch conditions is conducted.
结果显示，紫色沉积岩发育的土壤，在一定程度上继承了母岩的特点，化学风化作用微弱。
The results show that the soils have, in varying degree inherited some properties of purple sedimentary rocks for their very weak chemical weathering.
动态土壤侵蚀包括依赖于空间与时间的土壤剥离、细沟的形成、水流中过量泥沙的沉积、沉积泥沙中细沟的再生等物理过程。
Dynamic soil erosion processes involve the spatial and time dependent processes of detachment, rill formation, deposition, re rilling from deposited sediment and scouring of rills.
进而发现了密集风化裂隙含水空间的新类型，提出了粒间孔隙不是沉积形成的，而是土壤化的产物。
Dense weathering cracks as new bearing water space have been discovered, and it is known that grain void was formed in soil formation processes and was not formed in depositional processes.
这种风尘沉积作用即使在气候较为湿热的古土壤发育时期也未中断。
The dust sedimentations have never been intermitted even in the soil-forming periods when the climates were warmer and wetter.
与加速沉积有关的条件包括流域面积，沟壑发育状况和土壤结构等。
Conditions that are correlated with accelerated deposition include drainage area, gully development, and texture of source material.
土壤和沉积物是有机污染物的最终归宿之一。
Soils and sediments are the main final fate of organic pollutants.
在河南孟津地区发现全新世古土壤-黄土沉积剖面和湖沼相沉积剖面。
A holocene paleosol-loess sediment profile and lacustrine sediment profile were found in Mengjin, Henan province.
现代沉积旋回的孢粉平均浓度，远低于草地和坡耕地表土，这表明草地和坡耕地土壤不是沉积泥沙的主要来源。
Average pollen concentration in the modern deposits is much less than those in surface soils on both the grassland and the cultivated land.
本文着重论述了山门银矿地球化学特征； 水系沉积物，土壤及原生地球化学异常特征和分带性。
This paper mainly describes the geochemical characteristics, primary geochemical anomaly characteristics of water-laid deposits, soil and the zonation.
铁矿物是环境水体、土壤、沉积物和岩石的主要组分。
Iron minerals are the main constituent of waters, soils, sediments and rocks in nature.
铁矿物是环境水体、土壤、沉积物和岩石的主要组分。
Iron minerals are the main constituent of waters, soils, sediments and rocks in nature.
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