GB - Chinese national standards

Information processing--SGML support facilities--Registration procedures for public text owner identifiers

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Testing method for crystallographic perfection of silicon by preferential etch techniques

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EMC specification and test methods for land mobile communication equipment

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Methods of measurement for transmitting frequency

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Technical requirements of digital SPC automatic telephone exchange

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Power quality - Three-phase voltage unbalance

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Short-circuit current calculation in three-phase a.c. systems—Part 1: Calculation of currents

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Short-circuit current calculation in three-phase a.c. systems—Part 2: Factors for the calculation of short-circuit currents

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Short-circuit current calculation in three-phase a.c.systems—Part 3:Data of electrical equipment

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Short-circuit current calculation in three-phase a.c.systems—Part 4: Currents during two separate simultaneous line-to-earth short circuits and partial short-circuit currents flowing through earth

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