ew缩写词 abbr. =early warning预警(雷达),远程警戒

n.预先警报

例句：

Research on Early Warning Expert System for Gas based on SVM

基于支持向量机的瓦斯预警专家系统的研究

Food Safety and Special Equipment Safety Early Warning and Emergency System

食品安全和特种设备安全预警应急系统

Research on Remote Monitoring and Early Warning System for Water Supply Monitoring Network

工业供水管网远程监测与预警系统研究