这些致病因子使大肠杆菌可以定居于呼吸道或消化道黏膜，大量繁殖并侵入血液循环系统，引起各种疾病的发生。
These virulence factors enable E. coli can be settled in the respiratory or gastrointestinal mucosa, multiply and invade the blood circulatory system, causing various diseases.
废弃地的坡向和坡度也是影响植物定居的重要因子。
The aspect and slope of wasteland are important factors affecting plant colonization.
图3各因子对群落内定居幼苗短期存活概率的影响。
Fig. 3 Effects of factors on established seedlings survival in the community.
图4生物邻体和微生境因子对群落内定居幼苗相对生长速率的影响。
Fig. 4 Effects of biotic neighborhood and micro-habitat factors on the relative growth rate of established seedlings in the community.
图4生物邻体和微生境因子对群落内定居幼苗相对生长速率的影响。
Fig. 4 Effects of biotic neighborhood and micro-habitat factors on the relative growth rate of established seedlings in the community.
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