GB/T 21649.1-2024 Chinese PDF (GB/T21649.1-2024) GB/T 45354.1-2025 English versions: GB/T 33840-2025

English versions: GB/T 33840-2025

1-2024_Chinese: Mechanical vibration and shock - Characterization of the dynamic mechanical properties of visco-elastic materials - Part 1:PRinciples and guidelines (Chinese: 机械振动与冲击 黏弹性材料动态力学性能的表征 第1部分：原理和指南)

English versions: GB/T 45488-2025

GB/T 28267

YY/T 1941-2024_Chinese: Robotically-assisted laparoscopic surgical system (Chinese: 采用机器人技术的腹腔内窥镜手术系统)

GB/T 21649.1-2024 Chinese PDF (GB/T21649.1-2024) GB/T 45354.1-2025 English versions: GB/T 33840-2025GB T 21649. 1 2024_Chinese: Particle size analysis Image analysis methods Part 1: Static image analysis methods (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21649. 1 2024