Niobium pentoxide. Atomic-emission method for determination of titanium , silicon, iron, nickel, aluminium, magnesium, manganese, cobalt, chromium, lead and zirconium
State system for ensuring the uniformity of measurements. Safety glass for automobiles, tractors and agricultural machinery. Method for the determination of light transmission. Measurement procedure
State system for ensuring the uniformity of measurements. Light measurements. Values of relative spectral luminous efficiency function of monochromatic radiation for photopic vision
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