fit factor
A quantitative metric that measures how well a particular mask or respirator fits to a specific individual's face, defined as the ratio of the ambient concentration of aerosol particles to the concentration within the facepiece during use.
plural of feudal law
(Native American, folklore) An evil sorcerer, specifically one who walks by night in the form of a bear.
Alternative form of hegumen (“head of a monastery”)
配布前に安全担当者は、各マスクが着用者に十分な保護を提供するか確認するため、周囲のエアロゾル濃度とマスク内部の濃度の比率として定義される、個人の顔への密着度を示す定量的指標を測定した。
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DiQt
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