表层物

The saline - alkali soil area accounts for 2.1% of all the area.

由于盐碱土的物理化和化学性质相对比较恶劣，土壤粘重，表层下有碱化层，含盐量和碱化度高，对树木生长影响较大，给该地区林业发展带来了很大难分难解度。

Interlayer spacings of all the alkylamine intercalates are linearly proportional to their alkyl chain lengths.

十二胺和十六胺嵌入较难，得到的嵌入物结构不规整，代表层状结构的(001)峰不对称。

Considering complicated conditions of the coastal dynamic environment, sediment dynamics, and together with the immature sediment itself, the predicted results will be somewhat limited if only with numerical model. So, in order to obtain microcosmic quantitative assessment and macroscopically understanding, numerical model is combined with field observations in the thesis. Firstly, the tidal current, SSC distribution, benthal deposited materials were basically analyzed by field observations. Then, the tidal current, SSC distribution, and the erosion and accumulation of the seabed were simulated with the numerical model of ECOMSED.

但由于海岸动力环境多变，泥沙运动复杂，加之泥沙问题本身的复杂性，如仅用数学模型，其预测结果将受到一定的限制，故本文采用实测调查与数学模型计算相结合的方法，宏观把握，微观量化，在掌握岚山港西突堤工程所在海域潮流、悬沙量分布、表层底质沉积物类型及特点基本态势的基础上，紧扣开发工程可能引起潮流场变化，分析工程后悬沙量、海底冲淤变化及其空间分布，进而建立潮流作用下的泥沙输运数学模型，首先比较好地模拟目前岚山港西突堤工程附近海域的潮流场和悬沙场，然后预测海湾沿岸可能引起的冲淤强度变化和冲淤区域的空间分布。

Based on the data obtained from Haizhou Bay of Lianyungang in 2008, the concentrations and distributions of heavy metals in surface water, surface sediments and benthos were studied.

根据2008年连云港海州湾碱厂海域调查资料，分析了连云港近岸海域海水、表层沉积物及底栖动物体中重金属的含量和富集情况。

Evaluation results show that heavy metals of surface sediments in Arctic Chukchi Sea and the Bering Sea have not been artificially contaminated, remain within the scope of natural change.

重金属评价结果表明，整体上北极楚科奇海与白令海表层沉积物中重金属没有受到人为物质的污染，仍然处于自然变动范围之内。

Result Under the same climate and rock condition, the distribution of the soil organic matter and N, P, K changed congruously in the soil section. Moreover, soil nutriens were accumulated more intensively in the surface soil.

结果］在同一气候和母质条件下，针阔混交林次生演替群落中土壤有机质与氮、磷、钾等在剖面分布上的变化趋于一致，且在表层土壤中养分积累作用明显，与凋落物-土壤的分解吸收作用有关。

In addition, it was also found that, to some extent, the irrigation of Corbicula f1uminea had more or less influence on the nitrogen cycling in the Yangtze estuarine and tidal flat ecosystem.

软体动物河蚬主要通过生理活动影响近表层沉积物中氮素的迁移、转化。

Cystolith A deposit of calcium carbonate arising internally on a stalk form the cell walls of large modified epidermal cells in some flowering plants, e.g.

cystolith 钟乳体：在一些有花植物叶的表层细胞中，富含碳酸钙的沉积物，其一端与细胞壁连接，形成钟乳体。

Cemented coatings are often dark-colored and are usually termed "desert varnish" from their common occurrence in arid regions.

这种由胶结物形成的表层往往是深色的，因为它们通常出现在干旱区，故常称为"荒漠漆"（"desertvarnish"）。

In this study, we have also designed three primers to amplify Jiaozhou Bay dinoflagellate ribosomal RNA small subunit gene fragment.

另外，我们还设计了甲藻核糖体小亚基基因(ribosomal RNA small subunit gene，ssu rDNA)特异引物，对胶州湾表层海水甲藻遗传多样性进行了初步研究。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。