GB/T 29820.2-2024 Chinese PDF (GB /T29820.2-2024) GB/T 27697-2024 English versions: GB/T 27967-2024

English versions: GB/T 27967-2024

English versions: GB/T 20931

2-2024_Chinese: Lighting of work places - Part 2: Lighting requirements for safety and security of outdoor work places (Chinese: 工作场所照明 第2部分：室外作业场所的安全保障照明要求)

English versions: GB/T 1094

English versions: GB/T 1480-2025

GB/T 29820.2-2024 Chinese PDF (GB /T29820.2-2024) GB/T 27697-2024 English versions: GB/T 27967-2024GB T 29820. 2 2024_Chinese: Assessment of uncertainty in the calibration and use of flow measurement devices Part 2: Non linear calibration relationships (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 29820. 2 2024