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English versions: GB/T 45117-2024
1-2024_Chinese: Electromagnetic compatibility - Testing and measurement techniques - Part 1: Overview of immunity tests (Chinese: 电磁兼容 试验和测量技术 第1部分：抗扰度试验总论)
English versions: GB/T 45644-2025
GB/T 31379
English versions: GB 20827-2025
GB/T 23561.8-2024 Chinese PDF (GB/T23561.8-2024) GB/T 45602-2025 English versions: GB/T 45117-2024GB T 23561. 8 2024_Chinese: Methods for determining the physical and mechanical properties of coal and rock Part 8: Methods for determining the deformation parameters of coal and rock (Chinese: 8) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23561. 8 2024
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