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GB/T 34877.3-2017 standard english preview version PDF file download

GB Standard Code GB/T 34877.3-2017
Standard Category China National Standards
GB Standard English Title Industrial fans—Determination of fan sound power levels under standardized laboratory conditions—Part3:Enveloping surface methods
GB Standard Chinese Title 工业风机 标准实验室条件下风机声功率级的测定 第3部分:包络面法
Chinese Version Price $15 USD per 50 pages
English Translation Price About $15  per 1 page; Inquire us for detail price

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