UNI 3558-1959 Track fastenings of railway lines Spring washers for track bolts 《具有成套装备的铁路轨道材料 联轴节底座螺栓用弹簧垫圈》.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

2019年高考政治时政速递中央宣传部授予北京榜样优秀群体“时代楷模”称号课件.ppt

2019年高考政治时政速递促进转移就业助力脱贫攻坚课件.ppt

2019年高考政治时政速递创新服务模式多渠道增加养老服务供给课件.ppt

2019年高考政治时政速递国务院印发《国家职业教育改革实施方案》课件.ppt

2019年高考政治时政速递在全社会大力弘扬家国情怀课件.ppt

2019年高考政治时政速递奋进新时代欢度幸福年课件.ppt

2019年高考政治时政速递春节假期全国消费市场保持平稳较快增长课件.ppt

2019年高考政治时政速递月球再添5个中国地名嫦娥四号成果国际认可课件.ppt

2019年高考政治时政速递诗词里，有中国人的四季！课件.ppt