Russian standards PDF
Ambient air. Determination of the mass concentration of tire and road wear particles (TRWP). Pyrolysis-GC-MS method
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Optical transmitting modules on the basis of injection laser heads. Parameter system
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Non-linear elements of harmonic generators. Types and basic parameters
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Gas discharge devices. Multi-position, counting, indicator and switchboard devices. Parameters system
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Gas-discharge devices. Hot cathode thyratrons. Parameters system
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