However, at times of high vector densities the relative importance of mosquito-to-human transmission may increase.
不过，在媒蚊密度较高时，蚊虫向人传播病毒的相对重要性可能增加。
2
Specifically, the MRO of any given object (relative to a particular method) is simply the vector of named classes, if any, in its class attribute. For example.
The relative system, such as vector graphic system, database system, and space information system, are discussed in the paper, the basic principle and realize method are discussed in the paper also.