GOST 25830-1983 External circuits for start-stop apparatuses for alphabetic telegraphy 5-element code Types and basic parameters《通断式5单元码电传打字机外部线路 类型和基本参数》.pdf

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GOST 25830-1983 External circuits for start-stop apparatuses for alphabetic telegraphy 5-element code Types and basic parameters《通断式5单元码电传打字机外部线路 类型和基本参数》.pdf_第1页
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