Commons Attribution 4.0 truetrue English Face mask used to catch the bacteria and coronavirus shed in liquid droplets and aerosols. determination method or standard:...
0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Face mask used to catch the bacteria and coronavirus shed in liquid droplets and aerosols....
Attribution 4.0 truetrue English Face mask used to catch the bacteria and coronavirus shed in liquid droplets and aerosols from the wearer's mouth and nose....
Attribution 4.0 truetrue English Face mask used to catch the bacteria and coronavirus shed in liquid droplets and aerosols from the wearer's mouth and nose....
