Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Survey methods using an enveloping measurement surface over a reflecting plane
Plastics. Determination of the ultimate aerobic biodegradability under controlled composting conditions. Method by analysis of evolved carbon dioxide. Part 2. Gravimetric measurement of carbon dioxide evolved in a laboratory-scale test
Pattern plates with shallow changeable wooden inserts for moulding boxes having inside dimensions 400x300 mm, 450x350 mm, 500x400 mm for moulding foundry machines without turn of half mould with squeezing. Design and dimensions
