"A2" CNS Standards List |
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CNS 4123
2017 Edition Type A2 standard test block for ultrasonic angle beam testing 超音波斜束檢測用A2型標準規塊 |
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CNS 4123
1998 Edition Type A2 standard test block for ultrasonic angle beam testing 超音波斜束檢測用A2型標準規塊 |
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