Electroacoustic. Simulators of human head and ear. Part 4. Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts
Printing machinery. Safety requirements for the design and construction. Part 5. Machines for the production of corrugated board and machines for the conversion of flat and corrugated board
State system for ensuring the traceability of measurements. Analyzers for determination of sulphur in petroleum and petroleum products. Verification procedure
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