ONORM EN 23741-1992 Acoustics - Determination of sound power levels of noise sources - Precision methods for broad-band sources in reverberation rooms《声学 噪声源声功率级测定 混响室中宽带声源的精密测定法》.pdf

相关资源

IRS 70778-2-2018 Recommendations for determining the carrying capacity and fatigue risks of existing metallic railway bridges.pdf

IRS 70712-2018 Rail defects.pdf

IRS 50596-6-2018 Conditions for coding intermodal loading units in combined transport combined transport lines and wagons.pdf

IRS 50596-5-2018 Transport of road vehicles on wagons-Technical Organisation-Conveyance of semi-trailers with P coding or N coding on recess wagons.pdf

IESNA TM-23-2017 Lighting Control Protocols.pdf

IESNA RP-2-2017 Recommended Practice for Retail Lighting.pdf

ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

ITU-R RAPPORT M 763-3 FRENCH-1990 Signal level variation due to multipath effects and blockage by ship-s superstructure in maritime mobile-satellite service lin.pdf

ITU-R RAPPORT M 739-1 FRENCH-1986 Interference due to intermodulation products in the land mobile service between 25 and 100 MHz《由于互调产物在陆地移动服务25和100 MHz之间产生的干扰》.pdf

ITU-R RAPPORT M 319-7 FRENCH-1990 Characteristics of equipment and principles governing the assignment of frequency channels between 25 and 100 MHz for land mob.pdf

猜你喜欢

ASTM E1955-2004(2009) Standard Radiographic Examination for Soundness of Welds in Steel by Comparison to Graded ASTM E 390 Reference Radiographs《与分级的ASTM E390参考射线照相比对的钢焊接声音的标准射线照相检.pdf

ASTM E1955-2004(2014) Standard Radiographic Examination for Soundness of Welds in Steel by Comparison to Graded ASTM Reference Radiographs《与分级的ASTM a00002参考射线照相比对的钢焊接声音的标准射线照相检验》.pdf

ASTM E1957-2004 Standard Practice for Installing Using Pneumatic Tubes with Roadway Traffic Counters and Classifiers《用气压输送管和道路交通计数器和分级器安装的标准规程》.pdf

ASTM E1957-2004(2010) Standard Practice for Installing Using Pneumatic Tubes with Roadway Traffic Counters and Classifiers《用气压输送管和道路交通计数器和分级器安装的标准实施规程》.pdf

ASTM E1957-2004(2018) Standard Practice for Installing and Using Pneumatic Tubes With Roadway Traffic Counters and Classifiers.pdf

ASTM E1958-2007 Standard Guide for Sensory Claim Substantiation《感官评价试验标准指南》.pdf

ASTM E1958-2007e1 Standard Guide for Sensory Claim Substantiation《感官要求证明的标准指南》.pdf

ASTM E1958-2012 Standard Guide for Sensory Claim Substantiation《感官要求证明的标准指南》.pdf

ASTM E1958-2016 Standard Guide for Sensory Claim Substantiation《感官宣称实体化的标准指南》.pdf