GB/T 3939.2-2023 Chinese PDF (GB/T3939.2-2023) GB/T 24498-2025 9-2024_Chinese: Reciprocating internal combustion engine

9-2024_Chinese: Reciprocating internal combustion engine driven alternating current generating sets - Part 9: Measurement and evaluation of mechanical vibrations (Chinese: 往复式内燃机驱动的交流发电机组 第9部分：机械振动的测量和评价)

English versions: GB/T 37400

sheets and strips for general engineering - Part 2: Mechanical properties (Chinese: 一般工业用铝及铝合金板、带材 第2部分：力学性能)

5-2024_Chinese: Proton exchange membrane fuel cell - Part 5: Test method for membrane electrode assembly (Chinese: 质子交换膜燃料电池 第5部分：膜电极测试方法)

English versions: GB 42234-2022

GB/T 3939.2-2023 Chinese PDF (GB/T3939.2-2023) GB/T 24498-2025 9-2024_Chinese: Reciprocating internal combustion engineGB T 3939. 2 2023_Chinese: Nomenclature and signs of main fishing gear material Part 2: Netting (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 3939. 2 2023