查询词典 sediment-covered

The PAHs sorption on soil/sediment resulted from coaction of mineral substances and organic matter other than surface sorption or distribution process only.

在多环芳烃吸附过程中，如何结合其定量结构性质、有机无机复合体的界面结构以及环境化学特征认识吸附机理是今后研究的一个趋势。

Pulling setting presents in southern China in Permian forming rift basins, which extends and develops from the edge to the inside of continent. Under the influence of Dongwu movement, two second order cycles forming by up and down of sea level happened in Yangtze and Huaxia craton. Rift basins in continental margin are primary sedimentary location of LST. But craton areas are the main deposition area of TST and HST. Weathering on land and river sediment or only thin coaly clasolite of marsh facies present mainly in LST deposition.

二叠纪我国南方总体处于拉张背景，发育了由陆缘向陆内延伸发展的裂陷盆地；受东吴运动影响，扬子和华夏克拉通遭形成了两个二级海平面升降沉积旋回；陆缘裂陷盆地是低位期沉积的主要场所，而克拉通区主要为海侵和高位期沉积，低位期主要表现为陆上风化残积、河流沉积或仅发育厚度很薄的沼泽相含煤碎屑岩。

From Chaotianmen to Zigui,the Shannon-Weaver diversity index of phytoplankton changes undeely.4 the impact of sediment deposition on zooplankton in the waters studiedAccording to the results of the experiment, we had learnt that the species composition of zooplankton sampled had the same tendence-the species was from less to more, and the biomass was also gradually increasing. Particularly Copepoda had increased significantly in the type and quantity. The main of zooplankton at each sampling situs were protozoa and rotifers.

朝天门江段到秭归江段的浮游植物的Shannon-Weaver多样性指数呈波浪式变化，整体有下降趋势。4研究水域泥沙沉降对浮游动物的影响从本次实验的结果来看，四次采样浮游动物种类组成都有同一个趋势：种类由少到多，生物量也逐渐增大，特别是桡足类在种类和数量上都增加明显，各采样点的浮游动物以原生动物和轮虫为主。

8H2O and Y2O3 mixed with ammonia water of 3N levels by means of stirring, sediment, filtering, water, dry and cribration.

8H2O和Y2O3混合物为原料，与浓度为3N的氨水同时混合搅拌，沉淀、过滤、水洗、干燥、过筛，制得的纳米ZrO2粉体。

The weight of a deltaic pile of sediment may be so great as to depress the earth's crust, thus forming a moat around the depocentre

三角洲沉积物堆积的重量可以大到使地壳下沉的程度，因此在沉积中心周围形成一条深沟。

As far as the Changjiang River is concerned, the fluvial sediment discharge has been decreasing since the early 1980s in response to catchment human activities, which results in significant sedimentological and geomorphological changes over the deltaic areas.

由于流域水库建设的影响，长江输沙率自1980年以来呈现明显下降趋势，引发了研究人员对长江三角洲地貌和沉积响应问题的关注。

For the entire subaqueous delta, accurate calculations for the critical value will depend upon a sound understanding of the sediment retention of the deltaic system. Moreover, it would be appropriate to consider two critical discharges, one for the maintenance of the delta volume, and the other for the maintenance of the surface area of the delta on land.

对于水下三角洲整体而言，应根据沉积物滞留指数来更准确地估算临界输沙率，而且需要区分2个&临界输沙率&，一个是保持三角洲体积的临界值，另一个是保持三角洲陆上部分面积的临界值。

The Key Laboratory of Water and Sediment Sciences, Ministry of Education,Depa rtment of Envinmental Engineering, Peking University

水沙科学教育部重点实验室北京大学环境工程系 2。水沙科学教育部重点实验室北京大学环境工程系

P richment of surface sediment is possibly related to early diagenetic processes of P in the sediments.

表层沉积物磷的富集与磷的早期成岩行为存在密切关系。

Key words : grain size analysis ; laser diffract instrument ; sieve-pipette method ; model sediment

对不同的粒级组分进行了激光法和筛析-沉降法的回归分析，粗颗粒物质相关性好，可以进行数据间的转换。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。