LicensedCopy:leevincentpowleevincentpow,March18,2002,UncontrolledCopy,(c)BSIBritishStandardAsinglecopyofthisBritishStandardislicensedtoleevincentpowleevincentpowonMarch18,2
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/ 时间:2020-09-29 /
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BS,EN,ISO,5135-1999,声学.通过混响室测定空调终端设备、空调终端装置、阻尼器和阀门噪音的声音功率级,5135,1999,声学,通过,混响室,测定,空调,终端设备,终端,装置,阻尼,阀门