NF C93-684-3*NF EN IEC 62884-3:2018 Measurement techniques of piezoelectric, dielectric and electrostatic oscillators - Part 3 : frequency aging test methods
2018NF C93-684-3*NF EN IEC 62884-3:2018 Measurement techniques of piezoelectric, dielectric and electrostatic oscillators - Part 3 : frequency aging test methods