Occupational safety standards system. Personal protective means of hands. Protective gloves against dangerous chemicals and micro-organisms. Part 4. Determination of resistance to degradation by chemicals
Oscillator, modulator and regulation tubes with anode dissipated power above 25 W. Methods of cut-off voltage (bias), trans. Conductance and amplification factor measurements
United power system and isolated power systems. Thermal power plants. Heat-power equipment. Pre-launch steam-oxy- gen cleaning, passivation and preservation of the steam-water tract. Norms and requirements
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