用凝固点下降法测定了产品的分子量为478。
介绍凝固点下降薄层比较法测量熔点标准物质熔点的测量装置的构成与工作原理。
The structure and working principle of the devices for melting point measurement by means of thin film comparative method of cryoscopy were introduced.
介绍一个改进的凝固点下降法测定摩尔质量实验装置，它由保温瓶、凝固点杯、贝克曼温度计、电动搅拌器等几部分构成。
A device for determining molar mass with freezing point depression was improved, which consists of the Dewar bottle, sample container, Beckmann thermometer, and motor stirrer.
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