Description: ten times the logarithm to the base 10 of the ratio of the sound power radiated by a sound source to the reference sound power (P0 = 10?12 W); Name: acoustic power level
Description: ten times the logarithm to the base 10 of the ratio of the sound power of a source, p, to a reference value, p0, expressed in decibels; Name: sound output level
Description: Motion direction (rotating direction) in the case of rotation. NOTE: The rotational direction takes place in view of the targeted end. Anti-clockwise shaft rotation (left L) is described as positive and clockwise (right R ) as negative. Rotational direction-independence is described with (S); Name: Rotational direction of the drive