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British Standard Specification for flameproof air-break circuit breakers...

  • 出版社:London : British Standards Institution, 1930.
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British Standard Specification for totally-enclosed air-break circuitbreakers for voltages not excee

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British Standard Specification for flameproof air-break switches with or without fuses : for A. C. a

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High voltage circuit-breakers

  • 作者:Zajic,Vladislav.
  • 出版社:czechoslovakia : Artia Prague, c1957.
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British Standard Specification for distribution boars : up to 250 volts and 30 amperes per way.

  • 出版社:London : British Standards Institution, no.214-1929.
  • 出版年:1929