Benzene hydrocarbons and allied products. Chromatographic method of determination of main substance and impurities content in benzene, toluene and xylene
State system for ensuring the uniformity of measurements. State special standard and state verification schedule for means measuring radiation field parameters of antenna systems with operating dimensions of apertures from 0,40 to 0,75m at the frequency range from 8.2 to 40,0 GHz
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