Description: Lowest relative humidity to which a device can be exposed without permanently restricting its operating behavior; Name: relative humidity (minimum)
Description: lowest relative humidity to which a device may be subject without permanent impairment of operating characteristics; Name: min. air humidity
Description: determined through a surface, product of the sound pressure, p, and the component of the particle velocity, un, at a point on the surface in the direction normal to the surface, integrated over that surface; Name: sound power