查询词典 sediment-covered

Previous studies have showed that bicyclic alkanes and MMAs biomarkers in sediment are related to the parent material import of Botryococcus braunii.

前人研究表明，葡萄藻可能是地质体中两环倍半萜和单甲基支链烷烃的重要母质来源。

A total of 614 sediment samples at an interval of about 1.5 m from all 5 sites of the Integrated Ocean Drilling Program Expedition 311 on Cascadia Margin, northwestern Pacific were analyzed using a Beckman Coulter LS230 Particle Analyzer. The grainsize data were then plotted against depth and compared with other potential proxies of gas hydrateoccurrence such as soupy/mousselike fabrics in sedimentary textures, gas hydrate concentration derived from LWD data using Archie's relation, IR core images and the recovered samples of gas hydratebearing sediments.

对取自IODP 311航次（东北太平洋Cascadia大陆边缘）所有5个站位、采样间距约为1.5 m的614件沉积物样品，利用Beckman Coulter LS230激光粒度仪进行了沉积物粒度分析，获得了沉积物粒度随深度变化特征，进而与水合物层位的替代指标进行了位置对比，这些指标包括特殊沉积构造（soupy和mousselike构造）、测井数据推算出来的水合物饱和度、岩芯红外图像和实际钻取的含水合物沉积物等。

A total of 614 sediment samples at an interval of about 1.5m from all 5 sites of the Integrated Ocean Drilling Program Expedition 311 on Cascadia Margin, northwestern Pacific were analyzed using a Beckman Coulter LS-230 Particle Analyzer. The grain-size data were then plotted against depth and compared with other potential proxies of gas hydrate-occurrence such as soupy/mousse-like fabrics in sedimentary textures, gas hydrate concentration S(subscript h derived from LWD data using Archie's relation, IR core images and the recovered samples of gas hydrate-bearing sediments.

对取自IODP311航次（东北太平洋Cascadia大陆边缘）所有5个站位、采样间距约为1.5m的614件沉积物样品，利用Beckman Coulter LS-30激光粒度仪进行了沉积物粒度分析，获得了沉积物粒度随深度变化特征，进而与水合物层位的替代指标进行了位置对比，这些指标包括特珠沉积构造（soupy和mousse-like构造）、测井数据推算出来的水合物饱和度S(下标 h、岩芯红外图像和实际钻取的含水合物沉积物等。

In order to remove different concentrations of suspended sediment, a serial connected system of emerging plants, floatingleaved plants and submerged plants based on spatial distribution of natural water body was constructed by aquatic marcrophytes, such as Cyperus alternifolius, Acorus tatarinowii, Trapa japonica, Ceratophyllum demersum, Hydrilla verticillata and Vallisneria spiralis. Sandy water then flew through emerging plants, floatingleaved plants and submerged plants.

根据自然水体湿生植物、浮叶植物以及沉水植物的空间分布规律，利用风车草、石菖蒲、菱、金鱼藻、轮叶黑藻和苦草等水生植物构建由挺水植物、浮叶植物到沉水植物的串联系统，含沙水依次流经挺水植物、浮叶植物和沉水植物，测定各级植物对泥沙的去除效果。

The results in these three regions have been given that (1) Ephedra, as dry and desert vegetation, the average percents are 7.7 in Yang Lake, 4.2 in Kunlun Rive, 7.5 in Doucuo Lake, and the datum in Yang Lake is higher than others;(2) Gramineae, as humid vegetation, the average percents are 1.2 in Yang Lake, 4.9 in Kunlun Rive, 12.0 in Kuhai Lake, increasing gradually from west to east;(3) Artemisia, as humid vegetation, the average percents are 22.2 in Yang Lake, 43.6 in Kunlun Rive, 48.8 in Kuhai Lake, increasing gradually from west to east, too;(4) Chenopodiaceae, as dry vegetation, the average percents are 52.1 in Yang Lake, 42.4 in Kunlun Rive, 11.5 in Kuhai Lake, however, decreasing gradually from west to east;(5) Artemisia/Chenopodiaceae ,the average data, as environmental changing index, are 0.45 in Yang Lake, 1.23 in Kuniun Rive, 5.59 in Kuhai Lake, increasing gradually from west to east, and there is higher data scope during 3.0~4.3 ka BP in these two lake sediment profiles, then decreasing;(6) Ephedra/Artemisia, data are all increased but the amplitude is different, such as 0.45 in Yang Lake, 0.34 in Kunlun Rive, 0.28 in Kuhai Lake, decreasing gradually from west to east.

代表气候湿润的禾本科花粉平均百分含量，三个地区分别为：1.2%、4.9%、12.0%，从西向东数值逐渐升高。③代表气候湿润的蒿属花粉平均百分含量，三个地区分别为：22.2%，43.6%，48.8%，从西向东数值逐渐升高。④代表气候干旱的草科花粉平均百分含量，三个地区分别为：52.1%，42.4%，11.5%，从西向东数值逐渐降低。⑤依据蒿属、藜科花粉百分含量，计算出环境变化指标，蒿属／藜科值，三个地区的平均值分别为：0.45，1.23，5.59，从西向东比值逐渐升高，⑥麻黄属／蒿属值，在全新世晚期，三个地区都呈上升趋势，但幅度存在差异，分别为：0.45，0.34，0.28，从西向东数值逐渐降低。

Chromophoric dissolved organic matter; excitation-emission matrix fluorescence spectroscopy ; fluorescence; absorption; sediment pore waters; photodegradation

有色溶解有机物；荧光激发-发射矩阵光谱；荧光；吸收；沉积物间隙水；光化学降解

The recoveries of seawater and sediment are :naphthalene 73. 0% and 75. 3%, phenanthrene79. 2%and78. 0%, fluoranthene 88. 1% and 80. 7%, pyrene 73. 8% and 70. 2%, chrysene 77. 6% and 72. 8%, benzofluoranthene 87. 6% and 83.6%, benzo pyrene 120. 3% and 110. 0%, respectively.

通过对7种多环芳烃标准样品的高效液相色谱法的定性、定量分析，结果表明，该方法可有效分离PAHs，回收率较高，海水和沉积物中的回收率分别为：萘73.0％和75.3％，菲79.2％和78.0％，荧蒽88.1％和80.7％，芘73.8％和70.2％，屈77.6％和72.8％，苯并荧蒽87.6％和83.6％，苯并芘120.3％和110.0％。

The circumlittoral shore distributes, is piled up by the lax sediment or the gravel but become of even and slow ground.

海滩 Beache 沿海岸分布，由松散泥沙或砾石堆积而成的平缓地面。

The circumlittoral shore distributes, is piled up by the lax sediment or the gravel but become of even and slow ground.

宽屏， 杨幂，假日，海滩，壁纸海滩 Beache 沿海岸分布，由松散泥沙或砾石堆积而成的平缓地面。

To explore the climatic implication of compound-specific hydrogen isotope ratios of sedimentary n-alkanes, the author sampled shallow sediment cores respectively from the climatically and environmentally distinct basins Qiangyong Glacier Lake,Kongmu Co Lake,Nam Co Lake, Keluke Lake and Xiao Qaidam Lake along a S-N transect on the Tibetan Plateau for the extraction and analysis of these biomarkers.

本文分别在青藏高原南部的大枪勇错、空姆错，中部的纳木错以及东北部的克鲁克湖和小柴达木湖钻取了浅岩芯，通过对沉积物中正构烷烃的提取分析和单体氢同位素比值的测定来探讨该类生物标志物单体δD值的气候指示意义。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。