• 2022-06-19
    欧洲专利数据库中,下列检索结果最少的检索式是 :
    A: title:“bisphenol A” and prepare
    B: title or abstract:"bisphenol A" and prepar*
    C: title or abstract:“bisphenol A” and prepare
    D: title:“bisphenol A” and prepar*