Sometimes known as N95 respirators, they use thick layers of polypropylene, according to Dr. Leung, and are designed to fit tightly to the face.

  • 这种产品有时被命名为N95防护罩,梁博士说它由厚厚的多层聚乙烯制成,采用紧贴面部的设计。

  • 互联网摘选 2025-01-20 13:31:39

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句