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

GOST 22959-1978 Handles and frunnions for steel and iron moulding boxes Construction and dimensions《整铸钢和铸铁砂箱的把手和轴颈 结构及尺寸》.pdf

GOST 22960-1978 Ribs-crossbars of all-cast steel and iron moulding boxes Construction and dimensions《整铸钢和铸铁砂箱十字筋板 结构及尺寸》.pdf

GOST 22961-1978 Fixing lugs of all-cast steel and iron moulding boxes Construction and dimensions《整铸钢和铸铁砂箱的固定耳柄 结构及尺寸》.pdf

GOST 22962-1978 Lugs of all-cast steel and iron moulding boxes for centering and guide bushes Construction and dimensions《整铸钢和铸铁砂箱的耳柄 结构及尺寸》.pdf

GOST 22963-1978 Plates of all-cast steel and iron moulding boxes Construction and dimensions《整铸钢和铸铁砂箱的凸台 结构及尺寸》.pdf

GOST 22964-1978 Centering and guide bushes-pins for moulding boxes Construction and dimensions《铸造砂箱用导向与定位销套 结构及尺寸》.pdf

GOST 22965-1978 Pins for moulding boxes Construction and dimensions《铸造砂箱用定位销 结构及尺寸》.pdf

GOST 22966-1978 Cast fixing cramps for moulding boxes Construction and dimensions《铸造砂箱用固定铸制挂环 结构及尺寸》.pdf

GOST 22967-1990 Injection medical syringes of repeatid application General technical requirements and test methods《医疗用多次使用的注射器 一般技术要求及试验方法》.pdf