GB/T 20730.1-2024 Chinese PDF (GB/T20730.1-2024) GB/T 44916-2024 2-2024_Chinese: Acoustics - Calibration of

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)

GB/T 45142-2025_Chinese: Technical guidelines for monitoring and effectiveness evaluation for marine oil spill pollution ecological restoration (Chinese: 海洋溢油污染生态修复监测和效果评估技术指南)

29-2024_Chinese: Methods for chemical analysis of titanium sponge

2-2025_Chinese: Technical code of practice for evaluation of resistance to diseases and insect pests in wheat - Part 2: Leaf(brown) rust (Chinese: 小麦抗病虫性评价技术规程 第2部分：叶锈病)

GB/T 20730.1-2024 Chinese PDF (GB/T20730.1-2024) GB/T 44916-2024 2-2024_Chinese: Acoustics - Calibration ofGB 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