BS 7458-1:1991

Заменен

Test code for the measurement of airborne noise emitted by rotating electrical machinery, Engineering method for free-field conditions over a reflecting plane — 28 стр.

Описание Изменения Ссылки Версии

Ссылочные документы

BS EN ISO 1680:2000

Заменен

Acoustics. Test code for the measurement of airborne noise emitted by rotating electrical machinery — 28 стр.