GB/T 21270-2025 Chinese PDF (GB /T21270-2025) GB/T 20972.3-2025 2-2025_Chinese: Acoustics - Measurement of

Name: GB/T 21270-2025 Chinese PDF (GB /T21270-2025) GB/T 20972.3-2025 2-2025_Chinese: Acoustics - Measurement of
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SKU: 32218382242

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2-2025_Chinese: Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 2: The close-proximity method (Chinese: 声学道路表面对交通噪声影响的测量第2部分：近距法)

GB/T 18737

English versions: GB/T 22180-2024

24-2025_Chinese: Methods for chemical analysis of magnesium and magnesium alloys - Part 24: Determination of trace impurity elements contents - Glow discharge mass spectrometry (Chinese: 镁及镁合金化学分析方法第24部分：痕量杂质元素的测定辉光放电质谱法)

GB/T 15370

GB/T 21270-2025 Chinese PDF (GB /T21270-2025) GB/T 20972.3-2025 2-2025_Chinese: Acoustics - Measurement ofGB T 21270 2025_Chinese: General quality for food filling (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21270 2025

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