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 GB 31660.4-2019  
National food safety standards Determination of megestrol acetate and medroxyprogesterone acetate residues in animal foods Liquid chromatography-tandem mass spectrometry

食品安全国家标准 动物性食品中醋酸甲地孕酮和醋酸甲羟孕酮残留量的测定 液相色谱-串联质谱法
 GB/T 11024.3-2019  
Shunt capacitors for a.c. power systems having a rated voltage above 1 000 V—Part 3:protection of shunt capacitors and shunt capacitor banks

标称电压1 000 V以上交流电力系统用并联电容器 第3部分:并联电容器和并联电容器组的保护
 GB 31660.2-2019  
National Food Safety Standard Determination of octylphenol, nonylphenol, bisphenol A, diethylstilbestrol, estrone, 17α-ethinyl estradiol, 17β-estradiol and estriol residues in aquatic products by gas chromatography - mass spectrometry

食品安全国家标准 水产品中辛基酚、壬基酚、双酚A、已烯雌酚、雌酮、17α-乙炔雌二醇、17β-雌二醇、雌三醇残留量的测定 气相色谱-质谱法

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