Slide projectors and slides; projector slides for general use and for theatre projection, nominal sizes, dimensions of masks, picture position and marking— 9 стр.
Measurement of noise emitted by machines; Airborne noise measurement, enveloping surface method; Test report (test record) form for enveloping surface method— 6 стр.
Acoustics; statistical methods for determining and verifying stated noise emission values of machinery and equipment; part 4: methods for stated values for batches of machines; (identical with ISO 7574-4:1985); german version EN 27574-4:1988— 13 стр.
