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冷冻干燥物料共晶点和共熔点的电阻法测量

, PP. 65-69

Keywords: 冷冻干燥,共晶点,共熔点,测量,电阻法

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Abstract:

基于电阻法设计了交流电路测量装置,对部分果蔬、禽蛋、肉类等农产品的共晶点和共熔点进行了测量,在7.5~8500kΩ测量范围内,测量相对误差小于10%,满足测量精度要求。对测量数据进行曲线拟合,并根据函数曲率的物理意义,计算出物料的共晶点和共熔点。整合文献中的相关数据,列出60多种农产品物料的共晶点和共熔点。

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