Electrical apparatus for use in the presence of combustible dust. Part 2. Test methods. Section 2. Method for determining the electrical resistivity of dust in layers
Plastics pipes and fittings. Butt fusion jointing procedures for polyethylene (PE) pipes and fittings used in the construction of gas and water distribution systems
Soldering of electronic modules of radio-electronic means. Automated mixed and surface mounting using lead-free and conventional technology. Technical requirements for the implementation of technological operations
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