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DIN IEC/TS 61994-2*DIN SPEC 41994-2:2012-04

Действует
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection - Glossary - Part 2: Piezoelectric and dielectric filters (IEC/TS 61994-2:2011)
DIN IEC/TS 61994-2*DIN SPEC 41994-2:2012-04
Действует