Optics and photonics. Lenses for optical electronic systems. Methods for measuring the diameter of the entrance pupil and determining the relative aperture
Solid mineral fuel. Determination of total fluorine by combustion in calorimeter bomb with subsequent determination in solution by means of ion selective electrode
Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 4. Resistance of earth connection and equipotential bonding
€10
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