JY 45-1979
Impact pendulum tester (English Version)
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JY 45-1979
Standard No.
JY 45-1979
Language
Chinese,
Available in English version
Published By
Professional Standard - Education
Status
Withdraw
Replace By
JY 46-1979
Latest
JY 46-1979
JY 45-1979 history
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JY 46-1979
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