机译:Prototype development: the Speak-Easy mask
School of Human Sciences, Mississippi State University, Starkville, MS, USA;
Department of Industrial and Systems Engineering, Mississippi State University, Starkville, MS, USA;
Institute for Clean Energy Technology, Mississippi State University, Starkville, MS, USAMississippi State University, Starkville, MS, USA;
FEA model; product design; comfort; breathability; limited hearing;