liuxilin1215 发表于 2014-1-17 07:45:51

BS EN ISO 11201-2010

BS EN ISO 11201:2010 Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections


admin 发表于 2014-1-18 19:07:20


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mingechen 发表于 2014-1-23 10:19:31

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alicye 发表于 2017-5-3 12:25:25

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findpass 发表于 2017-5-17 12:05:11

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