土壤

The most alarming of all man''s assaults upon the environment is the contamination of air,earth,rivers,and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable.

在人类破坏环境的种种行为中，最令人担忧的是人类向大气、土壤、河流以及海洋中排放危险甚至致命物质，而当今这种污染在很大程度上是无法拯救的。

Soil-microorganisms system in two sites along Mosel river was chosen as typical soil-microorganisms system because the soil was highly polluted by PAHs and microorganisms were the majority of organisms.

土壤—微生物系统选择受PAHs污染严重且微生物为优势生物的Mosel河流沿岸土壤—微生物系统为例，研究结果发现，Temmels土壤添加的D_(10)-PA被很快释放，并被本土微生物迅速降解，在2周时间内降解了约92%，并在4周内降解了约99%，以后基本保持稳定。

An ecosystem is a community of different species interacting with one another and with their nonliving environment of soil,water,other forms of matter, and energy,mostly from the sun.

一个生态系统是不同物种以及非生命环境，土壤，水和其他形式的物质与源於太阳的能源在交互作用下所形成的一个社会。

Soil ; Natural Radioactivity ; Nuclide ; Content ; Investigation ; China

土壤；天然放射性；核素；含量；调查；中国

Soil ; Environment ; Direct Measurement ; Indirect Measurement ; Exposure Rate ; Nuclide Concentration

土壤；环境；直接测量；间接测量；照射量率；核素浓度

This website offers the access to the Map Library Catalog of the library at the Princeton University, USA. It contains 300,000 maps and charts, aerial and satellite photographs; 100 relief models; 15 globes; 850 slides, which are related to geology, geochemistry, geophysics, climatology, natural resources, land use, soils, water resources, remote sensing, topography, political and cultural geography, physiography, bathymetry, transportation, navigation, urban and regional planning.

从本网站可以获得美国Princeton大学图书馆的地图收集的目录，共有300000张地图、图表、航片和卫星图片，100种简单模型，15个地球仪、850张幻灯片，内容包括地质、地球化学、地球物理学、气候学、自然资源、土地利用、土壤、水资源、遥感、地形、政治与文化地理学、自然地理学、测深法、置换传输、航海、城市与区域规划。

Environment radon is mainly from rock and soil in geological environment, but the research is not connected with geological environment now. On the basis of physical field, the theoretical distribution model of radon in soil and exchange model of earth—air are set up by using Fick diffusion law and Dacy law, and then the research of environment radon is linked with geological environment. This paper described how the evry parameter of the theoretical model influence the radon concentration in air. The results of research indicat that molecule diffusion of radon is different from it's eddy form. Under the condition of surface radon source, the model experiment is used to study the transportation and distribution of radon in medium. The data of experiment show the relationship between radon and depth can be described by exponent. If the radioelement is well—distributtion, the concentration of radon in different depth or in different point at the same depth change with time, but the accumulated exhalation amount of radon at different point on the surface of model are close in relative long time. The author studied the exchange of radon between mediums and verified the theoretical models too.

环境氡主要来自岩石、土壤，而目前环境氡研究中与地质环境结合很少，为此作者以物理场为基础，运用气体运移的费克扩散定律和达西定律，建立起壤中氡浓度分布与大地—大气间氡交换理论模型，首次在理论上将环境氡与地质环境结合起来；论文中从理论上讨论了模型中各参数对空气中氡浓度的影响，发现空气中氡运移的分子扩散方式和湍流扩散方式存在明显差异；通过面状氡源条件下的氡运移模型实验，研究了介质中氡的运移与分布，实验数据表明氡浓度随深度的变化规律可用指数函数描述，在放射性元素分布均匀的条件下，介质中不同深度和同一深度不同点的氡浓度随时间而变，但介质表面不同点在较长时间内向空气中累计释放的氡的量是相近的；同时研究了不同介质间氡的交换，并验证了所建立的理论模型；运用理论模型预测青岛市城区壤中氡浓度、江西临川一住宅区空气中氡浓度及江西二个测区的区域空气中氡浓度分布，取得了较好的效果。

Index of geoaccumulation ; Heavy metal ; Road ; Soil ; Assessment

积累指数法；重金属；公路；土壤；评价

A series of research and analysis deal with several dealing impact factor(soil、 fertilizer、plant diseases and insect pests、ruderal、water quality and prune) of Green grass character in ShenZhen golf club.

本文以深圳高尔夫俱乐部球场果岭作为试验地，针对果岭草坪表现性状的几个主要影响因子：土壤、肥料、病虫害和杂草、水源、修剪高度分别进行了一系列的研究和分析。

Seed stock, plantation location, soil composition, altitude, weather conditions, fertilization, cultivation, harvesting, and processing methods, will all have a dramatic influence on the finished product

种子批次，种植地区，土壤，纬度，气候条件，肥料，种植方法，收获和处理方法，都会影响最终产品的质量。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。