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standard air
abbr., law st.air (Air with a weight of 0.075 pounds per cubic foot with an equivalent density of dry air at a temperature of 86 degrees Fahrenheit and standard barometric pressure of 29.92 inches of mercury. Found on http://www.electromn.com/glossary/s.htm Alexander Demidov)
abbr., mining. st. air
abbr., silic. stair
standard: 9 phrases in 1 subject
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