本文概述了天然环境中多环芳烃的来源、分布和迁移转化规律。
A large number of research results have been made on the sources, distribution, transport and transformation of polycyclic aromatic hydrocarbons (PAH) in the natural environment.
悬浮物中各种金属元素在河口的分布和迁移过程主要有絮凝、吸附、解吸和沉淀等。
The results demonstrate that the distributions and transport of metal elements of SPM in the estuarine area are mainly flocculation, adsorption, desorption and precipitation, etc.
在不考虑横向烧结非均匀性的情况下，将烧结过程热状态描述为料层各带厚度的分布和迁移速度的变化。
Take no account of transversal heterogeneity, thermal state of sintering process is described as the change of the thickness of each zone in bed layer and migration rate.
断层非均匀强度分布对地震的孕育、发生和迁移具有十分重要的作用。
The inhomogeneous distribution of strength in fault plane plays an important role in seismic generation, occurrence and removal.
文中从人口迁移、行政区的变动和海岛的地理环境等方面，对方言的分布特征与形成条件进行了分析研究。
Based on migration of population and change of administrative area and geographical environment of islands etc, the thesis analyzes the distribution characteristics and the shaping of dialect.
综述了镉在环境中的分布、污染来源及其在土壤中的迁移转化规律，着重讨论了镉在土壤中的赋存形态、生物有效性以及提取方法的现状和进展。
Progress in distribution, sources and transportation of cadmium in soils are summarized. The occurrence, bioavailability and extraction methodologies for cadmium in soils are discussed in this paper.
用工程性措施跨流域调水和促进人口迁移流动，是实现水资源与人口分布不均衡的两种不同思路。
There are two ways to re_distribute the allocation of water and population: water transfer between different river basins and migration.
介绍了铊的地球化学性质、分布状况、生理毒性和临床表现及环境迁移转化过程。
Thallium geochemical properties, distribution, physiological toxicity, clinical symptoms, chemical migration and transformation in the environment were reviewed.
不整合面的分布具有差异性、继承性、迁移性，三性对油气的演化和分配有着影响作用。
The distribution of the unconformity surfaces has three characters of discrepancy, succession, and migration which have great influence on the hydrocarbon distribution and reallocation.
采用负载迁移算法，使各节点的负载和存储空间达到均衡，以形成合理的数据分布。
Load migration algorithm is used to achieve both load balance and storage space balance on each node, which can form a reasonable distribution of data.
在季节性冻土分布区，土壤水分的冻结和融化必将会伴随着热量交换、水分迁移等物理过程。
Freezing and thawing of soil moisture is accompanied with a series of physical processes in seasonal freezing-thawing areas, such as moisture transfer and heat exchange.
强磁场的磁化力和洛伦兹力通过控制初晶硅颗粒迁移行为来改变其在合金基体中的分布状态，通过影响凝固过程中的对流现象改变合金的凝固组织。
The results indicate that it is possible to control the behaviors of reinforced particles in the metal matrix by using intense magnetic fields in the solidification process of metal matrix composites.
本文主要讨论分布式存储和线索迁移的实现机制。
The implementation schemes of distributed memory and thread migration are discussed.
与实验比较，给出了隙态分布的位置、宽度和高度，也给出了电子迁移率和复合系数。
Compared with the experimental results, the position, width and peak of distribution of states in gap, and also the electron mobility, cross section ot capture are obtained.
与实验比较，给出了隙态分布的位置、宽度和高度，也给出了电子迁移率和复合系数。
Compared with the experimental results, the position, width and peak of distribution of states in gap, and also the electron mobility, cross section ot capture are obtained.
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