State system for ensuring the uniformity of measurements. State verification schedule for means of measuring spectral density of radiance, spectral density of radiant intensity, spectral density of irradiance, radiant intensity and irradiance in the wavelength range of 0,2...25,0 µm
Electric hand-held tools, transportable tools and lawn and garden machinery. Safety and test methods. Part 2-4. Particular requirements for orbital sanders and belt sanders
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