Russian standards PDF
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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High-intensity gas-discharge sources of optical radiation. Classification and system of designations
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Mining equipment. Steel mine ropes. General technical requirements and test methods
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