Noise of machines. Reciprocating internal combustion engine driven alternating current generating sets. Measurement of airborne noise by the enveloping surface method
Industrial automation systems and integration. Product data representation and exchange. Part 512. Application interpreted construct. Faceted boundary representation
State system for ensuring the uniformity of measurements. Normal hydro-gen. Thermophysics properties at temperatures to 1000 K and pressures to 100 Mpa
