Soviet Inventions Illustrated

Soviet Inventions Illustrated

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The current circuit includes a phase shifter, three autotrans formers AT1, AT2, AT3, with a change-over switch, ... 335638 AUTOMATIC SWITCHING OF SEISMIC DETECTORS This concerns the cpnversion of seismic oscillations to ... This causes an HF generator (14) to superimpose wedge-like marks on the diagram.

Title:Soviet Inventions Illustrated
Publisher: - 1973


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