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GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024)
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GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024)
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GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024)GB T 34877. 4 2024_Chinese: Industrial fans Determination of fan sound power levels under standardized laboratory conditions Part 4: Sound intensity method (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 34877. 4 2024
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GB/T 34877.4-2024 Chinese PDF (GB/T34877.4-2024)
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