...
机译:Properties of materials considered for improvised masks
Univ British Columbia, Dept Mech Engn, 6250 Appl Sci Lane, Vancouver, BC V6T 1Z4, Canada;
Univ British Columbia, Forestry Prod Biotechnol & Bioenergy, Vancouver, BC, Canada;
Surrey Mem Hosp, Dept Anesthesia, Surrey, BC, Canada;