入侵

There were 14 invasive alien plant species out of 53 investigated plant species, accounted for 26.42% of total plant species found in the experimental zone. In terms of the comprehensive values of dominance of invasive alien weeds, Ageratum conyzoides and Pliea microphylla were larger than that of other plant species.

实验区样方内共发现53种植物，其中外来入侵植物计有14种，占植物总数的26.42%，外来入侵植物胜红蓟Ageratum conyzoides和小叶冷水花Pilea microphylla的优势度综合值最大。

Ageratum conyzoides L., an invasive alien weed, has invaded northwards from South China to the Changjiang River Basin and threatened many crops there. Soybean Glycine max

外来入侵杂草胜红蓟已由南向北入侵到我国长江流域，对众多作物构成威胁。

Because of the exotic weeds with strong reproductive capacity, adaptability and adversity-resistance, and short of strong competitive plants and natural enemies in the local area the exotic weeds such as Aiternanthera philoxeroides, Eichhornia crassipes, Ageratina adenophorun and Ageratum conyzoides etc.

由于农林牧渔业生产、绿化美化等目的有意引进；或旅游、交通工具等无意引入；或自身扩散传播的自然入侵，外来植物一旦逃逸人为控制进入自然生态系统并能自行繁殖和扩散，形成野化种群，变成外来入侵植物，成为危害农牧业生产和破坏生态环境的有害杂草。

In this paper, we introduce mobile agent technology and protocol analysis technology inIDS, and bring out a Distributed IDS Based on Mobile Agent and Protocol Analysis, whichcombines the Jpcap plug-in and mobile agent platform Aglet.

本文研究分析了移动代理技术以及协议分析技术，并将两种技术引入到入侵检测领域方面，提出了基于移动代理和协议分析的分布式入侵检测系统。

Condoning the invasion of Sicily was only the beginning for the Papacy's support of the Normans. The sheer presence of Rome midway along the Apennine peninsula now serves as a sturdy political shield from the continental powers to the north.

赦免西西里入侵只是教皇恩赐的一角，居於亚平宁半岛地理中部的罗马城，才是为西西里坚实的政治屏障，为其牢牢遏制住北欧强敌入侵。

Secondly, a lot of electrical equipment in substations (esp. transformers) is very sensitive to the steepness of lightning surge. At present, more and more research data indicate that impact corona is a crucial factor to attenuation and distortion of lightning surge.

其次，变电站的电气设备，特别是变压器，对于沿线路袭来的雷电入侵波陡度十分敏感，而最近越来越多的研究资料表明：入侵波沿导线传播过程中发生衰减和畸变的关键因素是冲击电晕。

The emergence and development of seawater intrusion cause negativeeffect on the environment and economy of beachfront. The influence of seawaterintrusion on the ecological environment and human life is discussed in detail in thispaper.

海水入侵的发展对滨海地区的环境、经济造成负面作用，本文详细研究了海水入侵对生态环境、人类生活的影响。

Julius Caesar, the great Roman general, invaded Britain for the first time in 55BC, partly to gather information about the island and partly to punish the Belgae who had helped their fellow tribesmen in their fight against the conquering Romans in Gaul, the land that is now France.

伟大的罗马将军裘历斯恺撒，于公元前55年第一次入侵英国。部分原因是为了获取当时这个无名岛的信息，部分原因是为了惩罚比利其人。在高卢，即现在的法国，比利其人帮助同部落人抵抗入侵的罗马人。

In this paper, effects of exotic plant invasions on soil biota and soil nutrient cycling processes are reviewed, and the mechanisms that underlie these impacts are discussed.

随着科学家对生态系统地下部分的重视，评价外来植物入侵对土壤生态系统的影响成为当前入侵生态学领域的研究热点之一。

Extensive field data showed that the B biotype has gradually displaced some indigenous biotypes of this species complex in many regions of invasion.

大量的野外调查表明，在许多入侵地，B型烟粉虱在入侵过程中逐渐取代了土著烟粉虱。

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。