口味衰减度

1、indd 1 15/05/2013 15:06National foreword This Published Document is the UK implementation of CEN/TR 16891:2016. The UK participation in its preparation was entrusted by Technical Committee EH/1, Acoustics, to Subcommittee EH/1/2, Transport noise. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The Bri。

2、ndards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordT h i s P u b l i s h e d D o c u m e n t i s t h e U K i m p l e m e n t a t i o n o f I E C / T R61282-14:2016, incorporating corrigendum April 2016.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices.A list of organizations represented on this subcommittee can be obtained on request to its se。

3、stemsPart 3: Determination of attenuation ofimpact loadsBS EN 13146-3:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13146-3:2012.It supersedes BS EN 13146-3:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RAE/2, Railway Applications - Track.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessarypro。

4、number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This is a guide for determining the appropriateness ofremediation by natural attenuation and implementing remedia-tion by natural attenuation at a given petroleum release site,either as a。

5、1997) The Radiocommunication Assembly, considering the necessity of estimating the atmospheric attenuation on Earth-satellite paths for particular locations where a) general climatological information is insufficient; b) that radiometric measurements may be employed to obtain an estimate of slant path attenuation, recommends that the following algorithms be used in estimating atmospheric attenuation from radiometric measurem brightness temperature. 1 Path attenuation r i of s。