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Aerodynamics: Atmospheric Hygienic facilities and ventilation of air intake System, renovation of Atmospheres (J. C. P.), Aeration and Mechanical Sanitation and Breathing Air changes in all kinds of buildings, rooms, furniture,
Aerodynamics: Atmospheric Hygienic facilities and ventilation of air intake System, renovation of Atmospheres (J. C. P.), Aeration and Mechanical Sanitation and Breathing Air changes in all kinds of buildings, rooms, furniture,
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机译：空气动力学：大气卫生设施和进气系统的通风，大气的翻新（J. C. P.），通风和机械卫生与呼吸各种建筑物，房间，家具，
