Четвертьмаска.jpg
US Occupational Safety & Health Administration
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Четвертьмаска, Occupational safety and health, Air-purifying respirators, Particulate respirators
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en
Четвертьмаска, Sealing to the front of the lower jaw
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ja
етвертьмаска、労働安全衛生、空気清浄呼吸器、人工呼吸器
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ja
下顎の前側に縫い付けるетвертьмаска
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purify purifier occupational safety and health administration ventilator