MIL-STD-188/198, MILITARY STANDARD: INTERFACE STANDARD JOINT PHOTOGRAPHIC EXPERTS GROUP (JPEG) IMAGE COMPRESSION FOR THE NATIONAL IMAGERY TRANSMISSION FORMAT STANDARD, DEPARTMENT OF DEFENSE INTERFACE STANDARD JOINT PHOTOGRAPHIC EXPERTS GROUP (JPEG) IMAGE COMPRESSION FOR THE NATIONAL IMAGERY TRANSMISSION FORMAT STANDARD (18 JUN 1993)., This standard establishes the requirements to be met by systems complying with NITFS when image data are compressed using the JPEG image compression algorithm as described in DIS 10918-1, Digital Compression and Coding of Continuous-tone Still Images.【英文标准名称】:Heatexchangers-Forcedconvectionaircooledrefrigerantcondensersanddrycoolers-Soundmeasurement
【原文标准名称】:热交换器.强制对流空气冷却制冷冷凝器和干燥冷却器.声音测量
【标准号】:BSEN13487-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-12-19
【实施或试行日期】:2003-12-19
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;测量技术;定义;热环境系统;规范(验收);被测量值;测量;液冷系统;干燥冷塔;制冷;声学测量;热交换器;通风机;冷凝器;试验条件;声强;制冷剂
【英文主题词】:Acousticmeasurement;Condensers;Definition;Definitions;Drycoolingtowers;Heatexchangers;Liquid-cooledsystems;Measuredvalue;Measurement;Measuringtechniques;Refrigerants;Refrigeration;Soundintensity;Specification(approval);Testing;Testingconditions;Thermalenvironmentsystems;Ventilators
【摘要】:Thisstandardspecifiesmethodsforuniformassessmentandtherecordingof:—theA-weightedsoundpowerlevel;—thesoundpowerspectrum;—acalculationmethodforanoverallaveragesoundpressurelevelatagivendistance.Amongthesedata,thesoundpowerlevelistheonlyunambiguouscharacteristic.Thisstandardisapplicableto:—forcedconvectionaircooledrefrigerantcondensersasspecifiedinEN327;—aircooledliquidcoolers"drycoolers"asspecifiedinEN1048.
【中国标准分类号】:J75
【国际标准分类号】:17_140_20;27_060_30
【页数】:24P.;A4
【正文语种】:英语