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positive pressure breathing apparatus [‘pɔzɪtɪv ˈpreʃə 'bri:ðɪŋ ,æpə'reɪtəs]stresses
avia. аппаратура для дыхания под избыточным давлением
positive pressure breathing apparatus: 3 phrases in 2 subjects
Firefighting and fire-control systems2
Material safety data sheet1