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Quadruplane
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Quadraplane, английский
An aircraft having four or more wingforms.
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Standard atmosphere, английский
- Стандартная атмосфера
- A pressure equivalent to 14.7 lb per sq in. (1.01 ? 106 dynes per sq cm).
- Air maintained at 70°f (21°c) and 65% relative humidity. when international testing is involved, a standard temperature of 20°c or, by agreement, 27°c may be used. special humidity and temperature conditions are sometimes prescribed for the testing of certain textiles for specific service predictions, resistance to water or biological action, etc.
Pic, английский
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