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Příbuzné dokumenty:	Ultrasonic testing on welded joints of thin plate modeled upon the welded joints on the corner of a mobile crane boom Limites d´exposition aux infrasons et aus ultrasons CHEMagazín - 2006 / 05 - 2006/05 CHEMagazín - 2007/02 On using multiple-jet nozzles to supress industrial jet noise International Journal of Occupational Safety and Ergonomics - 2007/04 Theoretical predictions and actual hearing threshold levels in workers exposed to ultrasonic noise of impulsive character Svařování za studena CHEMagazín - 2014/1 Messung von luftgeleitetem Ultraschall am Arbeitsplatz CHEMagazín - 2021/4