Vector control is the primary public health intervention for reducing malaria transmission at the community level.

病媒控制是在社区一级减少疟疾传播的首要公共卫生干预措施。

youdao

Nowadays, wavelet transform, vector quantization and embedded encoding has been the primary technique and study focus for image compression, to which people attach their more importance.

目前，小波变换、矢量量化以及嵌入式编码已经成为图像压缩的主要技术及研究热点，越来越受到重视。

youdao

An abstract object-oriented model for power network topology is built up and an automatic generation method of primary topology is introduced, which applies the model and system vector coordinates.

提出了一种面向对象的抽象电力网络拓扑的模型，并用此模型实现了用系统矢量图的坐标关系自动生成原始拓扑的方法。

youdao