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GB - Chinese national standards - Page 7632

Standards GB - Chinese national standards - Page 7632

Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level. Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document

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Preview GB/T 3789.26-1991 15.8.1991
GB/T 3789.26-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Methods of measuring the power gain

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.27-1991 15.8.1991
GB/T 3789.27-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Methods of measuring the inter-modulation distortion of a three tone signal

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.28-1991 15.8.1991
GB/T 3789.28-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Method of measuring the cross modulation

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.29-1991 15.8.1991
GB/T 3789.29-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Method of measuring the non-linearity in the luminance of the lower frequency

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.3-1991 15.8.1991
GB/T 3789.3-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Measuring methods of cathode emission current

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.30-1991 15.8.1991
GB/T 3789.30-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Methods of measuring the distortion in the chrominance signal due to the luminance (differential gain and differential phase)

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.31-1991 15.8.1991
GB/T 3789.31-1991 WITHDRAWN

Measurements of the electrical properties of trausmitting tubes Methods of measuring the press of synchronizing pluse

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.4-1991 15.8.1991
GB/T 3789.4-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Measuring methods of reverse grids current

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.5-1991 15.8.1991
GB/T 3789.5-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Measuring methods of grid thermo-emission current

WITHDRAWN published on 15.8.1991

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Preview GB/T 3789.6-1991 15.8.1991
GB/T 3789.6-1991 WITHDRAWN

Measurements of the electrical properties of transmitting tubes Measuring methods of transconductance and amplification factor

WITHDRAWN published on 15.8.1991

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