"Type A1" CNS Standards List| Acoustics | Power systems | Method test | Special Square | Woodworking Hollow | Information technology | Ventilating fan | Copper rod | |
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CNS 4122
2017 Edition Type A1 standard test block for ultrasonic testing 超音波檢測用Ａ１型標準規塊 |
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CNS 4122
1998 Edition Type A1 standard test block for ultrasonic testing 超音波檢測用Ａ１型標準規塊 |
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