GB/T 20730.1-2024 Chinese PDF (GB/T20730.1-2024) GB/T 44916-2024 English versions: GB/T 44996-2024

English versions: GB/T 44996-2024

GB/T 18822

2-2024_Chinese: Acoustics - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration (Chinese: 声学 水听器校准 第2部分：低频声压场校准方法)

2-2024_Chinese: Mechanical vibration and shock - Characterization of the dynamic mechanical properties of visco-elastic materials - Part 2:REsonance method (Chinese: 机械振动与冲击 黏弹性材料动态力学性能的表征 第2部分：共振法)

English versions: GB/T 19822-2024

GB/T 20730.1-2024 Chinese PDF (GB/T20730.1-2024) GB/T 44916-2024 English versions: GB/T 44996-2024GB T 20730. 1 2024_Chinese: Instruments with analogue inputs and two or multi state outputs for use in industrial process control systems Part 1: Methods for evaluating performance (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 20730. 1 2024