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English versions: GB/T 45294-2025
3-2025_Chinese: Non-destructive testing - Ultrasonic testing block - Part 3: Calibration block for curved surface (Chinese: 无损检测 超声检测试块 第3部分：曲面检测标准试块)
1) - Part 3: Constraint specification (Chinese: 信息技术 抽象语法记法一（ASN
GB 20943-2025_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies (Chinese: 交流-直流和交流-交流电源能效限定值及能效等级)
GB/T 45449-2025 Chinese PDF (GB /T45449-2025) GB/T 19267.13-2025 English versions: GB/T 45294-2025GB T 45449 2025_Chinese: Revert materials for powder metallurgy superalloy (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45449 2025
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