Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering/survey methods for use in situ in a reverberant environment
State system for ensuring the uniformity of measurements. Highly directional antennas. The technique of measurements for determining parameters by the aperture field
Quality requirements for fusion welding of metallic materials. Part 5. Documents with which it is necessary to conform to claim conformity to the quality requirements of ISO 3834-2, ISO 3834-3 or ISO 3834-4
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