negative vagueness

• 负功能

negative vagueness的用法和样例：

例句

1. A brief introduction to domestic research of negative refracting materials is given, and two possible routes to negative refracting via functional polymeric materials are suggeted.
   本文还简要介绍了国内负折射材料的研究现状，提出了利用高分子功能材料实现负折射的两种可能的途径。