Methods for the petrographic analysis of bituminous coal and anthracite. Part 4. Method of determining microlithotype, carbominerite and minerite composition
Common test methods for insulating and sheathing materials of electric and optical cables. Part 4-2. Methods specific to polyethylene and polypropylene compounds. Tensile strength and elongation at break after conditioning at elevated temperature. Wrapping test after conditioning at elevated temperature. Wrapping test after thermal ageing in air. Measurement of mass increase. Long-term stability t
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