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GB/T 18115.7-2006
稀土金属及其氧化物中稀土杂质化学分析方法 钆中镧、铈、镨、钕、钐、铕、铽、镝、钬、铒、铥、镱、镥和钇量的测定
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Gadolinium-Determination of lanthanum, cerium, praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yt
GB/T 19660-2005
Industrial automation systems and integration-Numerical control of machines-Coordinate system and motion nomenclature
GB/T 12775-1991
Generic specification for disc-style ceramic dielectric variable preset capacitors in electronic equipment
GB/T 18496.2-2005
电子设备用机电开关 第4-1部分:钮子（倒扳）开关 空白详细规范
Electromechanical switches for use in electronic equipment Part 4-1:Sectional specification for lever(toggle)switches Blank detail specification
GB/T 6060.2-2006
Roughness comparison specimens - Ground, turned, bored, milled, shaped and planed