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日本爱拓PEN数显笔式折射仪PEN数显笔式折射仪3730PEN-PRO数显笔式折射仪测量范围:Brix 0.0~85.0%,分辨率Brix 0.1%4,7803741PEN-Urine S.G.数显笔式尿比重折射仪测量范围: 尿比重 1.0000 ~1.0600 ,分辨率 0.00014,950