FA/JA系列电子分析天平技术参数型号称量范围可读性秤盘尺寸FA10040-100g0.1mgф90mmFA11040-110g0.1mgф90mmFA16040-160g0.1mgф90mmFA20040-200g0.1mgф90mmFA21040-210g0.1mgф90mmJA10030-110g1mgф90mmJA12030-120g1mgф90mmJA20030-210g1mgф90mmJA30030-310g1mgф90mmJA40030-410g1mgф90mmJA50030-510g1mgф90mm