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GB/T 22319.9-2018 Measurement of quartz crystal unit parameters—Part 9:Measurement of spurious resonances of piezoelectric crystal units (USD) via email in 1-3 business day VALID
GB/T 22319.8-2008 Measurement of quartz crystal unit parameters - Part 8: Test fixture for surface mounted quartz crystal units (USD) via email in 1-3 business day VALID
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